22022131994 has 4 divisors (see below), whose sum is σ = 33033197994. Its totient is φ = 11011065996.

The previous prime is 22022131987. The next prime is 22022132017. The reversal of 22022131994 is 49913122022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21378241369 + 643890625 = 146213^2 + 25375^2 .

It is a super-2 number, since 2×22022131994² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505532997 + ... + 5505533000.

Almost surely, 2^22022131994 is an apocalyptic number.

22022131994 is a deficient number, since it is larger than the sum of its proper divisors (11011066000).

22022131994 is a wasteful number, since it uses less digits than its factorization.

22022131994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11011065999.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 22022131994 in words is "twenty-two billion, twenty-two million, one hundred thirty-one thousand, nine hundred ninety-four".