22120112212021 has 16 divisors (see below), whose sum is σ = 22571642934000. Its totient is φ = 21671510515200.

The previous prime is 22120112211961. The next prime is 22120112212031. The reversal of 22120112212021 is 12021221102122.

It can be written as a sum of positive squares in 8 ways, for example, as 13320622225 + 22106791589796 = 115415^2 + 4701786^2 .

It is a cyclic number.

It is not a de Polignac number, because 22120112212021 - 2¹³ = 22120112203829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22120112212021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120112212031) 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, 43439275 + ... + 43945543.

It is an arithmetic number, because the mean of its divisors is an integer number (1410727683375).

Almost surely, 2^{22120112212021} is an apocalyptic number.

It is an amenable number.

22120112212021 is a deficient number, since it is larger than the sum of its proper divisors (451530721979).

22120112212021 is a wasteful number, since it uses less digits than its factorization.

22120112212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509160.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22120112212021 its reverse (12021221102122), we get a palindrome (34141333314143).

The spelling of 22120112212021 in words is "twenty-two trillion, one hundred twenty billion, one hundred twelve million, two hundred twelve thousand, twenty-one".