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13121210020110 = 2351976892212433
BaseRepresentation
bin1011111011110000010100…
…0011111111000100001110
31201110101010200112112022120
42332330011003333010032
53204434214231120420
643523444535553410
72522655546644253
oct276740503770416
951411120475276
1013121210020110
1141a9745a94935
12157ab8a82b866
1374242b7649ca
143350d9d4942a
1517b4a59a6d40
hexbef050ff10e

13121210020110 has 32 divisors (see below), whose sum is σ = 31491077577120. Its totient is φ = 3498970057728.

The previous prime is 13121210020109. The next prime is 13121210020133. The reversal of 13121210020110 is 1102001212131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13121210020110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4824454 + ... + 7036886.

It is an arithmetic number, because the mean of its divisors is an integer number (984096174285).

Almost surely, 213121210020110 is an apocalyptic number.

13121210020110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121210020110 is an abundant number, since it is smaller than the sum of its proper divisors (18369867557010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13121210020110 is a wasteful number, since it uses less digits than its factorization.

13121210020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410132.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 13121210020110 its reverse (1102001212131), we get a palindrome (14223211232241).

The spelling of 13121210020110 in words is "thirteen trillion, one hundred twenty-one billion, two hundred ten million, twenty thousand, one hundred ten".

Divisors: 1 2 3 5 6 10 15 30 197689 395378 593067 988445 1186134 1976890 2212433 2965335 4424866 5930670 6637299 11062165 13274598 22124330 33186495 66372990 437373667337 874747334674 1312121002011 2186868336685 2624242004022 4373736673370 6560605010055 13121210020110