32121140442421 has 4 divisors (see below), whose sum is σ = 32121156371392. Its totient is φ = 32121124513452.

The previous prime is 32121140442379. The next prime is 32121140442439. The reversal of 32121140442421 is 12424404112123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32121140442421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32121140442221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4411311 + ... + 9148876.

It is an arithmetic number, because the mean of its divisors is an integer number (8030289092848).

Almost surely, 2^{32121140442421} is an apocalyptic number.

It is an amenable number.

32121140442421 is a deficient number, since it is larger than the sum of its proper divisors (15928971).

32121140442421 is a wasteful number, since it uses less digits than its factorization.

32121140442421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15928970.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 32121140442421 its reverse (12424404112123), we get a palindrome (44545544554544).

The spelling of 32121140442421 in words is "thirty-two trillion, one hundred twenty-one billion, one hundred forty million, four hundred forty-two thousand, four hundred twenty-one".