11011222002172 has 24 divisors (see below), whose sum is σ = 22324121323616. Its totient is φ = 4654450003968.

The previous prime is 11011222002167. The next prime is 11011222002173. The reversal of 11011222002172 is 27120022211011.

It is a super-2 number, since 2×11011222002172² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011222002173) 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, 2693545413 + ... + 2693549500.

Almost surely, 2^{11011222002172} is an apocalyptic number.

It is an amenable number.

11011222002172 is an abundant number, since it is smaller than the sum of its proper divisors (11312899321444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11011222002172 is a wasteful number, since it uses less digits than its factorization.

11011222002172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5387094997 (or 5387094995 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 11011222002172 its reverse (27120022211011), we get a palindrome (38131244213183).

The spelling of 11011222002172 in words is "eleven trillion, eleven billion, two hundred twenty-two million, two thousand, one hundred seventy-two".