20031022121231 has 8 divisors (see below), whose sum is σ = 21852099222528. Its totient is φ = 18209957535000.

The previous prime is 20031022121167. The next prime is 20031022121263. The reversal of 20031022121231 is 13212122013002.

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

It is not a de Polignac number, because 20031022121231 - 2⁶ = 20031022121167 is a prime.

It is a super-2 number, since 2×20031022121231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031022121291) 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, 389906 + ... + 6341456.

It is an arithmetic number, because the mean of its divisors is an integer number (2731512402816).

Almost surely, 2^{20031022121231} is an apocalyptic number.

20031022121231 is a deficient number, since it is larger than the sum of its proper divisors (1821077101297).

20031022121231 is a wasteful number, since it uses less digits than its factorization.

20031022121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6257533.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20031022121231 its reverse (13212122013002), we get a palindrome (33243144134233).

The spelling of 20031022121231 in words is "twenty trillion, thirty-one billion, twenty-two million, one hundred twenty-one thousand, two hundred thirty-one".