121311113010 has 64 divisors (see below), whose sum is σ = 308661249024. Its totient is φ = 30459974400.

The previous prime is 121311112987. The next prime is 121311113051. The reversal of 121311113010 is 10311113121.

It is a super-2 number, since 2×121311113010² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1728321 + ... + 1797140.

It is an arithmetic number, because the mean of its divisors is an integer number (4822832016).

Almost surely, 2^121311113010 is an apocalyptic number.

121311113010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121311113010 is an abundant number, since it is smaller than the sum of its proper divisors (187350136014).

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

121311113010 is a wasteful number, since it uses less digits than its factorization.

121311113010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3525539.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 121311113010 its reverse (10311113121), we get a palindrome (131622226131).

The spelling of 121311113010 in words is "one hundred twenty-one billion, three hundred eleven million, one hundred thirteen thousand, ten".