31322121212021 has 8 divisors (see below), whose sum is σ = 31418452221024. Its totient is φ = 31225800458160.

The previous prime is 31322121211951. The next prime is 31322121212027. The reversal of 31322121212021 is 12021212122313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31322121212021 - 2¹⁴ = 31322121195637 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 (31322121212027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3576755 + ... + 8685471.

It is an arithmetic number, because the mean of its divisors is an integer number (3927306527628).

Almost surely, 2^{31322121212021} is an apocalyptic number.

It is an amenable number.

31322121212021 is a deficient number, since it is larger than the sum of its proper divisors (96331009003).

31322121212021 is a wasteful number, since it uses less digits than its factorization.

31322121212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5127571.

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

Adding to 31322121212021 its reverse (12021212122313), we get a palindrome (43343333334334).

The spelling of 31322121212021 in words is "thirty-one trillion, three hundred twenty-two billion, one hundred twenty-one million, two hundred twelve thousand, twenty-one".