22821213774 has 32 divisors (see below), whose sum is σ = 47477233440. Its totient is φ = 7304169600.

The previous prime is 22821213773. The next prime is 22821213781. The reversal of 22821213774 is 47731212822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22821213773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330817 + ... + 393804.

It is an arithmetic number, because the mean of its divisors is an integer number (1483663545).

Almost surely, 2^22821213774 is an apocalyptic number.

22821213774 is an abundant number, since it is smaller than the sum of its proper divisors (24656019666).

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

22821213774 is a wasteful number, since it uses less digits than its factorization.

22821213774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724836.

The product of its digits is 75264, while the sum is 39.

The spelling of 22821213774 in words is "twenty-two billion, eight hundred twenty-one million, two hundred thirteen thousand, seven hundred seventy-four".