21031102022211 has 12 divisors (see below), whose sum is σ = 31425784631280. Its totient is φ = 13537261071600.

The previous prime is 21031102022207. The next prime is 21031102022243. The reversal of 21031102022211 is 11222020113012.

21031102022211 is a `hidden beast` number, since 210 + 31 + 1 + 0 + 202 + 221 + 1 = 666.

It is not a de Polignac number, because 21031102022211 - 2² = 21031102022207 is a prime.

It is a super-2 number, since 2×21031102022211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21031102722211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40289467215 + ... + 40289467736.

It is an arithmetic number, because the mean of its divisors is an integer number (2618815385940).

Almost surely, 2^{21031102022211} is an apocalyptic number.

21031102022211 is a deficient number, since it is larger than the sum of its proper divisors (10394682609069).

21031102022211 is a wasteful number, since it uses less digits than its factorization.

21031102022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80578934986 (or 80578934983 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21031102022211 its reverse (11222020113012), we get a palindrome (32253122135223).

The spelling of 21031102022211 in words is "twenty-one trillion, thirty-one billion, one hundred two million, twenty-two thousand, two hundred eleven".