21011203131122 has 16 divisors (see below), whose sum is σ = 31765694037792. Its totient is φ = 10422864203040.

The previous prime is 21011203131119. The next prime is 21011203131133. The reversal of 21011203131122 is 22113130211012.

It is a junction number, because it is equal to n+sod(n) for n = 21011203131094 and 21011203131103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56251283 + ... + 56623574.

It is an arithmetic number, because the mean of its divisors is an integer number (1985355877362).

Almost surely, 2^{21011203131122} is an apocalyptic number.

21011203131122 is a deficient number, since it is larger than the sum of its proper divisors (10754490906670).

21011203131122 is a wasteful number, since it uses less digits than its factorization.

21011203131122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112875593.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 21011203131122 its reverse (22113130211012), we get a palindrome (43124333342134).

The spelling of 21011203131122 in words is "twenty-one trillion, eleven billion, two hundred three million, one hundred thirty-one thousand, one hundred twenty-two".