121142011402 has 16 divisors (see below), whose sum is σ = 196151984640. Its totient is φ = 55939638832.

The previous prime is 121142011387. The next prime is 121142011421. The reversal of 121142011402 is 204110241121.

It is a happy number.

It is a super-3 number, since 3×121142011402³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121142011402.

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, 45404218 + ... + 45406885.

It is an arithmetic number, because the mean of its divisors is an integer number (12259499040).

Almost surely, 2^121142011402 is an apocalyptic number.

121142011402 is a deficient number, since it is larger than the sum of its proper divisors (75009973238).

121142011402 is a wasteful number, since it uses less digits than its factorization.

121142011402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90811157.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121142011402 its reverse (204110241121), we get a palindrome (325252252523).

The spelling of 121142011402 in words is "one hundred twenty-one billion, one hundred forty-two million, eleven thousand, four hundred two".