21230231122122 has 32 divisors (see below), whose sum is σ = 46878582643200. Its totient is φ = 6355892484720.

The previous prime is 21230231122117. The next prime is 21230231122123. The reversal of 21230231122122 is 22122113203212.

It is a junction number, because it is equal to n+sod(n) for n = 21230231122092 and 21230231122101.

It is not an unprimeable number, because it can be changed into a prime (21230231122123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1937766622 + ... + 1937777577.

It is an arithmetic number, because the mean of its divisors is an integer number (1464955707600).

Almost surely, 2^{21230231122122} is an apocalyptic number.

21230231122122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21230231122122 is an abundant number, since it is smaller than the sum of its proper divisors (25648351521078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21230231122122 is a wasteful number, since it uses less digits than its factorization.

21230231122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875544298.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21230231122122 its reverse (22122113203212), we get a palindrome (43352344325334).

The spelling of 21230231122122 in words is "twenty-one trillion, two hundred thirty billion, two hundred thirty-one million, one hundred twenty-two thousand, one hundred twenty-two".