20112012321231 has 8 divisors (see below), whose sum is σ = 26877947183920. Its totient is φ = 13377042836352.

The previous prime is 20112012321209. The next prime is 20112012321307. The reversal of 20112012321231 is 13212321021102.

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

It is not a de Polignac number, because 20112012321231 - 2²⁵ = 20111978766799 is a prime.

It is a super-2 number, since 2×20112012321231² (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 = 20112012321198 and 20112012321207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112012322231) 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, 7741342936 + ... + 7741345533.

It is an arithmetic number, because the mean of its divisors is an integer number (3359743397990).

Almost surely, 2^{20112012321231} is an apocalyptic number.

20112012321231 is a deficient number, since it is larger than the sum of its proper divisors (6765934862689).

20112012321231 is a wasteful number, since it uses less digits than its factorization.

20112012321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15482688905.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20112012321231 its reverse (13212321021102), we get a palindrome (33324333342333).

The spelling of 20112012321231 in words is "twenty trillion, one hundred twelve billion, twelve million, three hundred twenty-one thousand, two hundred thirty-one".