22115553201 has 24 divisors (see below), whose sum is σ = 37860373824. Its totient is φ = 12637458000.

The previous prime is 22115553199. The next prime is 22115553209. The reversal of 22115553201 is 10235551122.

It is not a de Polignac number, because 22115553201 - 2¹ = 22115553199 is a prime.

It is a super-2 number, since 2×22115553201² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22115553209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6499050 + ... + 6502451.

It is an arithmetic number, because the mean of its divisors is an integer number (1577515576).

Almost surely, 2^22115553201 is an apocalyptic number.

22115553201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22115553201 is a deficient number, since it is larger than the sum of its proper divisors (15744820623).

22115553201 is an equidigital number, since it uses as much as digits as its factorization.

22115553201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13001523 (or 13001511 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The spelling of 22115553201 in words is "twenty-two billion, one hundred fifteen million, five hundred fifty-three thousand, two hundred one".