121351110402 has 16 divisors (see below), whose sum is σ = 243188604000. Its totient is φ = 40369306272.

The previous prime is 121351110373. The next prime is 121351110437. The reversal of 121351110402 is 204011153121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20262723 + ... + 20268710.

It is an arithmetic number, because the mean of its divisors is an integer number (15199287750).

Almost surely, 2^121351110402 is an apocalyptic number.

121351110402 is an abundant number, since it is smaller than the sum of its proper divisors (121837493598).

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

121351110402 is a wasteful number, since it uses less digits than its factorization.

121351110402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40531937.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 121351110402 its reverse (204011153121), we get a palindrome (325362263523).

The spelling of 121351110402 in words is "one hundred twenty-one billion, three hundred fifty-one million, one hundred ten thousand, four hundred two".