32121100231421 has 4 divisors (see below), whose sum is σ = 32174018024832. Its totient is φ = 32068182438012.

The previous prime is 32121100231403. The next prime is 32121100231427. The reversal of 32121100231421 is 12413200112123.

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-32121100231421 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 (32121100231427) 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, 26458895795 + ... + 26458897008.

It is an arithmetic number, because the mean of its divisors is an integer number (8043504506208).

Almost surely, 2^{32121100231421} is an apocalyptic number.

It is an amenable number.

32121100231421 is a deficient number, since it is larger than the sum of its proper divisors (52917793411).

32121100231421 is an equidigital number, since it uses as much as digits as its factorization.

32121100231421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52917793410.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 32121100231421 its reverse (12413200112123), we get a palindrome (44534300343544).

The spelling of 32121100231421 in words is "thirty-two trillion, one hundred twenty-one billion, one hundred million, two hundred thirty-one thousand, four hundred twenty-one".