22021219974 has 16 divisors (see below), whose sum is σ = 47430320112. Its totient is φ = 6775759968.

The previous prime is 22021219973. The next prime is 22021220029. The reversal of 22021219974 is 47991212022.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021219973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141161589 + ... + 141161744.

It is an arithmetic number, because the mean of its divisors is an integer number (2964395007).

Almost surely, 2^22021219974 is an apocalyptic number.

22021219974 is an abundant number, since it is smaller than the sum of its proper divisors (25409100138).

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

22021219974 is a wasteful number, since it uses less digits than its factorization.

22021219974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282323351.

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 22021219974 in words is "twenty-two billion, twenty-one million, two hundred nineteen thousand, nine hundred seventy-four".