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13121010210 = 23571117477109
BaseRepresentation
bin11000011100001001…
…01011101000100010
31020212102111101021010
430032010223220202
5203332434311320
610005552441350
7643102514040
oct141604535042
936772441233
1013121010210
1156235171a0
122662249256
131311490689
148c6869390
1551bda6ae0
hex30e12ba22

13121010210 has 256 divisors, whose sum is σ = 42460692480. Its totient is φ = 2511114240.

The previous prime is 13121010197. The next prime is 13121010211. The reversal of 13121010210 is 1201012131.

It is not an unprimeable number, because it can be changed into a prime (13121010211) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1842136 + ... + 1849244.

It is an arithmetic number, because the mean of its divisors is an integer number (165862080).

Almost surely, 213121010210 is an apocalyptic number.

13121010210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13121010210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21230346240).

13121010210 is an abundant number, since it is smaller than the sum of its proper divisors (29339682270).

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

13121010210 is a wasteful number, since it uses less digits than its factorization.

13121010210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7201.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 13121010210 its reverse (1201012131), we get a palindrome (14322022341).

The spelling of 13121010210 in words is "thirteen billion, one hundred twenty-one million, ten thousand, two hundred ten".