20221231021313 has 8 divisors (see below), whose sum is σ = 23110114693632. Its totient is φ = 17332381444896.

The previous prime is 20221231021259. The next prime is 20221231021337. The reversal of 20221231021313 is 31312013212202.

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

It is not a de Polignac number, because 20221231021313 - 2¹² = 20221231017217 is a prime.

It is a super-2 number, since 2×20221231021313² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221231021363) 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, 7240220 + ... + 9636557.

It is an arithmetic number, because the mean of its divisors is an integer number (2888764336704).

Almost surely, 2^{20221231021313} is an apocalyptic number.

It is an amenable number.

20221231021313 is a deficient number, since it is larger than the sum of its proper divisors (2888883672319).

20221231021313 is a wasteful number, since it uses less digits than its factorization.

20221231021313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17047951.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20221231021313 its reverse (31312013212202), we get a palindrome (51533244233515).

The spelling of 20221231021313 in words is "twenty trillion, two hundred twenty-one billion, two hundred thirty-one million, twenty-one thousand, three hundred thirteen".