22012621550 has 24 divisors (see below), whose sum is σ = 41814618336. Its totient is φ = 8617706240.

The previous prime is 22012621507. The next prime is 22012621573. The reversal of 22012621550 is 5512621022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4681187 + ... + 4685886.

It is an arithmetic number, because the mean of its divisors is an integer number (1742275764).

Almost surely, 2^22012621550 is an apocalyptic number.

22012621550 is a deficient number, since it is larger than the sum of its proper divisors (19801996786).

22012621550 is a wasteful number, since it uses less digits than its factorization.

22012621550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9367132 (or 9367127 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 22012621550 in words is "twenty-two billion, twelve million, six hundred twenty-one thousand, five hundred fifty".