22919950901 has 4 divisors (see below), whose sum is σ = 22920634572. Its totient is φ = 22919267232.

The previous prime is 22919950897. The next prime is 22919950939. The reversal of 22919950901 is 10905991922.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18768726001 + 4151224900 = 136999^2 + 64430^2 .

It is a cyclic number.

It is not a de Polignac number, because 22919950901 - 2² = 22919950897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22919952901) 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, 288806 + ... + 359511.

It is an arithmetic number, because the mean of its divisors is an integer number (5730158643).

Almost surely, 2^22919950901 is an apocalyptic number.

It is an amenable number.

22919950901 is a deficient number, since it is larger than the sum of its proper divisors (683671).

22919950901 is an equidigital number, since it uses as much as digits as its factorization.

22919950901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683670.

The product of its (nonzero) digits is 131220, while the sum is 47.

The spelling of 22919950901 in words is "twenty-two billion, nine hundred nineteen million, nine hundred fifty thousand, nine hundred one".