31302022022121 has 4 divisors (see below), whose sum is σ = 41736029362832. Its totient is φ = 20868014681412.

The previous prime is 31302022022087. The next prime is 31302022022189. The reversal of 31302022022121 is 12122022020313.

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 not a de Polignac number, because 31302022022121 - 2³¹ = 31299874538473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31302022022021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5217003670351 + ... + 5217003670356.

It is an arithmetic number, because the mean of its divisors is an integer number (10434007340708).

Almost surely, 2^{31302022022121} is an apocalyptic number.

It is an amenable number.

31302022022121 is a deficient number, since it is larger than the sum of its proper divisors (10434007340711).

31302022022121 is a wasteful number, since it uses less digits than its factorization.

31302022022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10434007340710.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31302022022121 its reverse (12122022020313), we get a palindrome (43424044042434).

The spelling of 31302022022121 in words is "thirty-one trillion, three hundred two billion, twenty-two million, twenty-two thousand, one hundred twenty-one".