22122102021021 has 12 divisors (see below), whose sum is σ = 31954194762048. Its totient is φ = 14748046137864.

The previous prime is 22122102021013. The next prime is 22122102021031. The reversal of 22122102021021 is 12012020122122.

It is a happy number.

22122102021021 is a `hidden beast` number, since 221 + 2 + 210 + 2 + 0 + 210 + 21 = 666.

It is not a de Polignac number, because 22122102021021 - 2³ = 22122102021013 is a prime.

It is a super-2 number, since 2×22122102021021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22122102020985 and 22122102021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122102021031) 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, 6658236 + ... + 9411498.

It is an arithmetic number, because the mean of its divisors is an integer number (2662849563504).

Almost surely, 2^{22122102021021} is an apocalyptic number.

It is an amenable number.

22122102021021 is a deficient number, since it is larger than the sum of its proper divisors (9832092741027).

22122102021021 is a wasteful number, since it uses less digits than its factorization.

22122102021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3646032 (or 3646029 counting only the distinct ones).

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

Adding to 22122102021021 its reverse (12012020122122), we get a palindrome (34134122143143).

The spelling of 22122102021021 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred two million, twenty-one thousand, twenty-one".