121012424402 has 32 divisors (see below), whose sum is σ = 193493508912. Its totient is φ = 56563605504.

The previous prime is 121012424387. The next prime is 121012424417. The reversal of 121012424402 is 204424210121.

It is an interprime number because it is at equal distance from previous prime (121012424387) and next prime (121012424417).

It can be written as a sum of positive squares in 8 ways, for example, as 56424776521 + 64587647881 = 237539^2 + 254141^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4091138 + ... + 4120610.

Almost surely, 2^121012424402 is an apocalyptic number.

121012424402 is a deficient number, since it is larger than the sum of its proper divisors (72481084510).

121012424402 is a wasteful number, since it uses less digits than its factorization.

121012424402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30302.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 121012424402 its reverse (204424210121), we get a palindrome (325436634523).

The spelling of 121012424402 in words is "one hundred twenty-one billion, twelve million, four hundred twenty-four thousand, four hundred two".