22215513551 has 32 divisors (see below), whose sum is σ = 27870560256. Its totient is φ = 17202780000.

The previous prime is 22215513503. The next prime is 22215513553. The reversal of 22215513551 is 15531551222.

It is not a de Polignac number, because 22215513551 - 2¹⁸ = 22215251407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22215513553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18046106 + ... + 18047336.

It is an arithmetic number, because the mean of its divisors is an integer number (870955008).

Almost surely, 2^22215513551 is an apocalyptic number.

22215513551 is a deficient number, since it is larger than the sum of its proper divisors (5655046705).

22215513551 is a wasteful number, since it uses less digits than its factorization.

22215513551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523.

The product of its digits is 15000, while the sum is 32.

The spelling of 22215513551 in words is "twenty-two billion, two hundred fifteen million, five hundred thirteen thousand, five hundred fifty-one".