22021211220112 has 40 divisors (see below), whose sum is σ = 48366425461760. Its totient is φ = 9628707738240.

The previous prime is 22021211220101. The next prime is 22021211220209. The reversal of 22021211220112 is 21102211212022.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 22021211220112.

It is an unprimeable number.

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, 2786080464 + ... + 2786088367.

It is an arithmetic number, because the mean of its divisors is an integer number (1209160636544).

Almost surely, 2^{22021211220112} is an apocalyptic number.

It is an amenable number.

22021211220112 is an abundant number, since it is smaller than the sum of its proper divisors (26345214241648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22021211220112 is a wasteful number, since it uses less digits than its factorization.

22021211220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5572168871 (or 5572168865 counting only the distinct ones).

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

Adding to 22021211220112 its reverse (21102211212022), we get a palindrome (43123422432134).

The spelling of 22021211220112 in words is "twenty-two trillion, twenty-one billion, two hundred eleven million, two hundred twenty thousand, one hundred twelve".