20222121232031 has 24 divisors (see below), whose sum is σ = 20784536753904. Its totient is φ = 19674460552320.

The previous prime is 20222121231947. The next prime is 20222121232057. The reversal of 20222121232031 is 13023212122202.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20222121232031 is a prime.

It is a super-2 number, since 2×20222121232031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20222121231988 and 20222121232006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222121232091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 920138315 + ... + 920160291.

It is an arithmetic number, because the mean of its divisors is an integer number (866022364746).

Almost surely, 2^{20222121232031} is an apocalyptic number.

20222121232031 is a deficient number, since it is larger than the sum of its proper divisors (562415521873).

20222121232031 is a wasteful number, since it uses less digits than its factorization.

20222121232031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23991 (or 23948 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20222121232031 its reverse (13023212122202), we get a palindrome (33245333354233).

The spelling of 20222121232031 in words is "twenty trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred thirty-two thousand, thirty-one".