22212391550 has 24 divisors (see below), whose sum is σ = 41322268152. Its totient is φ = 8883404000.

The previous prime is 22212391549. The next prime is 22212391577. The reversal of 22212391550 is 5519321222.

It is a super-2 number, since 2×22212391550² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275345 + ... + 346755.

It is an arithmetic number, because the mean of its divisors is an integer number (1721761173).

Almost surely, 2^22212391550 is an apocalyptic number.

22212391550 is a deficient number, since it is larger than the sum of its proper divisors (19109876602).

22212391550 is a wasteful number, since it uses less digits than its factorization.

22212391550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77644 (or 77639 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 22212391550 in words is "twenty-two billion, two hundred twelve million, three hundred ninety-one thousand, five hundred fifty".