22101210112021 has 8 divisors (see below), whose sum is σ = 22104664798104. Its totient is φ = 22097755676160.

The previous prime is 22101210111991. The next prime is 22101210112027. The reversal of 22101210112021 is 12021101210122.

It can be written as a sum of positive squares in 4 ways, for example, as 3821094225 + 22097389017796 = 61815^2 + 4700786^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22101210112021 - 2³⁹ = 21551454298133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22101210111986 and 22101210112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101210112027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247901965 + ... + 247991101.

It is an arithmetic number, because the mean of its divisors is an integer number (2763083099763).

Almost surely, 2^{22101210112021} is an apocalyptic number.

It is an amenable number.

22101210112021 is a deficient number, since it is larger than the sum of its proper divisors (3454686083).

22101210112021 is an equidigital number, since it uses as much as digits as its factorization.

22101210112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125111.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22101210112021 its reverse (12021101210122), we get a palindrome (34122311322143).

The spelling of 22101210112021 in words is "twenty-two trillion, one hundred one billion, two hundred ten million, one hundred twelve thousand, twenty-one".