21022210022211 has 16 divisors (see below), whose sum is σ = 31150595221920. Its totient is φ = 14011845513120.

The previous prime is 21022210022173. The next prime is 21022210022221. The reversal of 21022210022211 is 11222001222012.

It is a happy number.

21022210022211 is a `hidden beast` number, since 210 + 2 + 221 + 0 + 0 + 22 + 211 = 666.

It is not a de Polignac number, because 21022210022211 - 2¹⁷ = 21022209891139 is a prime.

It is a super-2 number, since 2×21022210022211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21022210022221) 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, 82124520 + ... + 82380101.

It is an arithmetic number, because the mean of its divisors is an integer number (1946912201370).

Almost surely, 2^{21022210022211} is an apocalyptic number.

21022210022211 is a deficient number, since it is larger than the sum of its proper divisors (10128385199709).

21022210022211 is a wasteful number, since it uses less digits than its factorization.

21022210022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164509363 (or 164509357 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21022210022211 its reverse (11222001222012), we get a palindrome (32244211244223).

The spelling of 21022210022211 in words is "twenty-one trillion, twenty-two billion, two hundred ten million, twenty-two thousand, two hundred eleven".