22212111101021 has 24 divisors (see below), whose sum is σ = 22644218288160. Its totient is φ = 21787034752512.

The previous prime is 22212111101017. The next prime is 22212111101023. The reversal of 22212111101021 is 12010111121222.

It is not a de Polignac number, because 22212111101021 - 2² = 22212111101017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212111101023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 767694071 + ... + 767723003.

It is an arithmetic number, because the mean of its divisors is an integer number (943509095340).

Almost surely, 2^{22212111101021} is an apocalyptic number.

It is an amenable number.

22212111101021 is a deficient number, since it is larger than the sum of its proper divisors (432107187139).

22212111101021 is an equidigital number, since it uses as much as digits as its factorization.

22212111101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29853 (or 29756 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 22212111101021 its reverse (12010111121222), we get a palindrome (34222222222243).

The spelling of 22212111101021 in words is "twenty-two trillion, two hundred twelve billion, one hundred eleven million, one hundred one thousand, twenty-one".