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13103010321220 = 225655150516061
BaseRepresentation
bin1011111010101100100001…
…0001101001001101000100
31201101122011022121000220201
42332223020101221031010
53204134431120234340
643511235001140244
72521442545030531
oct276531021511504
951348138530821
1013103010321220
1141a1a56805776
12157754b78a684
137407bb054201
14334290bb7d88
1517ac8cd0379a
hexbeac8469344

13103010321220 has 12 divisors (see below), whose sum is σ = 27516321674604. Its totient is φ = 5241204128480.

The previous prime is 13103010321197. The next prime is 13103010321227. The reversal of 13103010321220 is 2212301030131.

It can be written as a sum of positive squares in 2 ways, for example, as 4152107179584 + 8950903141636 = 2037672^2 + 2991806^2 .

It is not an unprimeable number, because it can be changed into a prime (13103010321227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327575258011 + ... + 327575258050.

It is an arithmetic number, because the mean of its divisors is an integer number (2293026806217).

Almost surely, 213103010321220 is an apocalyptic number.

13103010321220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13103010321220 is an abundant number, since it is smaller than the sum of its proper divisors (14413311353384).

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

13103010321220 is a wasteful number, since it uses less digits than its factorization.

13103010321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655150516070 (or 655150516068 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13103010321220 its reverse (2212301030131), we get a palindrome (15315311351351).

The spelling of 13103010321220 in words is "thirteen trillion, one hundred three billion, ten million, three hundred twenty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 655150516061 1310301032122 2620602064244 3275752580305 6551505160610 13103010321220