13121021010 has 16 divisors (see below), whose sum is σ = 31490450496. Its totient is φ = 3498938928.

The previous prime is 13121021003. The next prime is 13121021099. The reversal of 13121021010 is 1012012131.

It is a super-2 number, since 2×13121021010² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218683654 + ... + 218683713.

It is an arithmetic number, because the mean of its divisors is an integer number (1968153156).

Almost surely, 2^13121021010 is an apocalyptic number.

13121021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121021010 is an abundant number, since it is smaller than the sum of its proper divisors (18369429486).

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

13121021010 is a wasteful number, since it uses less digits than its factorization.

13121021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437367377.

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

Adding to 13121021010 its reverse (1012012131), we get a palindrome (14133033141).

The spelling of 13121021010 in words is "thirteen billion, one hundred twenty-one million, twenty-one thousand, ten".