22220742992 has 20 divisors (see below), whose sum is σ = 49203074016. Its totient is φ = 9523175520.

The previous prime is 22220742989. The next prime is 22220742997. The reversal of 22220742992 is 29924702222.

It is a super-2 number, since 2×22220742992² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220742997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99199634 + ... + 99199857.

Almost surely, 2^22220742992 is an apocalyptic number.

It is an amenable number.

22220742992 is an abundant number, since it is smaller than the sum of its proper divisors (26982331024).

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

22220742992 is a wasteful number, since it uses less digits than its factorization.

22220742992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198399506 (or 198399500 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 22220742992 in words is "twenty-two billion, two hundred twenty million, seven hundred forty-two thousand, nine hundred ninety-two".