22120212201021 has 48 divisors (see below), whose sum is σ = 35993072494080. Its totient is φ = 12969191664000.

The previous prime is 22120212201007. The next prime is 22120212201047. The reversal of 22120212201021 is 12010221202122.

It is a happy number.

22120212201021 is a `hidden beast` number, since 221 + 202 + 1 + 220 + 1 + 0 + 21 = 666.

It is not a de Polignac number, because 22120212201021 - 2²¹ = 22120210103869 is a prime.

It is a super-4 number, since 4×22120212201021⁴ (a number of 54 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22120212200985 and 22120212201003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120212201421) 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, 7520775 + ... + 10040043.

It is an arithmetic number, because the mean of its divisors is an integer number (749855676960).

Almost surely, 2^{22120212201021} is an apocalyptic number.

It is an amenable number.

22120212201021 is a deficient number, since it is larger than the sum of its proper divisors (13872860293059).

22120212201021 is a wasteful number, since it uses less digits than its factorization.

22120212201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522178 (or 2522175 counting only the distinct ones).

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

Adding to 22120212201021 its reverse (12010221202122), we get a palindrome (34130433403143).

The spelling of 22120212201021 in words is "twenty-two trillion, one hundred twenty billion, two hundred twelve million, two hundred one thousand, twenty-one".