22110212220021 has 48 divisors (see below), whose sum is σ = 33231416400000. Its totient is φ = 14154387287040.

The previous prime is 22110212220017. The next prime is 22110212220037. The reversal of 22110212220021 is 12002221201122.

It is a happy number.

22110212220021 is a `hidden beast` number, since 2 + 211 + 0 + 212 + 220 + 0 + 21 = 666.

It is not a de Polignac number, because 22110212220021 - 2² = 22110212220017 is a prime.

It is a super-2 number, since 2×22110212220021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22110212219976 and 22110212220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22110212220001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29870605 + ... + 30601853.

It is an arithmetic number, because the mean of its divisors is an integer number (692321175000).

Almost surely, 2^{22110212220021} is an apocalyptic number.

It is an amenable number.

22110212220021 is a deficient number, since it is larger than the sum of its proper divisors (11121204179979).

22110212220021 is a wasteful number, since it uses less digits than its factorization.

22110212220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732586 (or 732583 counting only the distinct ones).

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

Adding to 22110212220021 its reverse (12002221201122), we get a palindrome (34112433421143).

The spelling of 22110212220021 in words is "twenty-two trillion, one hundred ten billion, two hundred twelve million, two hundred twenty thousand, twenty-one".