22157213503 has 8 divisors (see below), whose sum is σ = 22443436800. Its totient is φ = 21871134168.

The previous prime is 22157213479. The next prime is 22157213509. The reversal of 22157213503 is 30531275122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22157213503 - 2⁹ = 22157212991 is a prime.

It is a super-2 number, since 2×22157213503² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22157213509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293100 + ... + 360862.

It is an arithmetic number, because the mean of its divisors is an integer number (2805429600).

Almost surely, 2^22157213503 is an apocalyptic number.

22157213503 is a deficient number, since it is larger than the sum of its proper divisors (286223297).

22157213503 is an equidigital number, since it uses as much as digits as its factorization.

22157213503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71981.

The product of its (nonzero) digits is 12600, while the sum is 31.

Adding to 22157213503 its reverse (30531275122), we get a palindrome (52688488625).

The spelling of 22157213503 in words is "twenty-two billion, one hundred fifty-seven million, two hundred thirteen thousand, five hundred three".