11402123232121 has 32 divisors (see below), whose sum is σ = 12292064847360. Its totient is φ = 10544139277056.

The previous prime is 11402123232091. The next prime is 11402123232167. The reversal of 11402123232121 is 12123232120411.

It is a cyclic number.

It is not a de Polignac number, because 11402123232121 - 2²⁷ = 11401989014393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11402123262121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 941773350 + ... + 941785456.

It is an arithmetic number, because the mean of its divisors is an integer number (384127026480).

Almost surely, 2^{11402123232121} is an apocalyptic number.

It is an amenable number.

11402123232121 is a deficient number, since it is larger than the sum of its proper divisors (889941615239).

11402123232121 is a wasteful number, since it uses less digits than its factorization.

11402123232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18853.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 11402123232121 its reverse (12123232120411), we get a palindrome (23525355352532).

The spelling of 11402123232121 in words is "eleven trillion, four hundred two billion, one hundred twenty-three million, two hundred thirty-two thousand, one hundred twenty-one".