22115750181 has 16 divisors (see below), whose sum is σ = 34522147968. Its totient is φ = 12329337600.

The previous prime is 22115750179. The next prime is 22115750191. The reversal of 22115750181 is 18105751122.

It is not a de Polignac number, because 22115750181 - 2¹ = 22115750179 is a prime.

It is a super-2 number, since 2×22115750181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22115750101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12842200 + ... + 12843921.

It is an arithmetic number, because the mean of its divisors is an integer number (2157634248).

Almost surely, 2^22115750181 is an apocalyptic number.

22115750181 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22115750181 is a deficient number, since it is larger than the sum of its proper divisors (12406397787).

22115750181 is a wasteful number, since it uses less digits than its factorization.

22115750181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25686172.

The product of its (nonzero) digits is 5600, while the sum is 33.

The spelling of 22115750181 in words is "twenty-two billion, one hundred fifteen million, seven hundred fifty thousand, one hundred eighty-one".