27122211222172 has 24 divisors (see below), whose sum is σ = 52880442773760. Its totient is φ = 12065974043760.

The previous prime is 27122211222101. The next prime is 27122211222181.

27122211222172 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×27122211222172² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6557592522 + ... + 6557596657.

It is an arithmetic number, because the mean of its divisors is an integer number (2203351782240).

Almost surely, 2^{27122211222172} is an apocalyptic number.

27122211222172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27122211222172 is a deficient number, since it is larger than the sum of its proper divisors (25758231551588).

27122211222172 is a wasteful number, since it uses less digits than its factorization.

27122211222172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13115189241 (or 13115189239 counting only the distinct ones).

The product of its digits is 12544, while the sum is 34.

It can be divided in two parts, 2712221 and 1222172, that added together give a palindrome (3934393).

The spelling of 27122211222172 in words is "twenty-seven trillion, one hundred twenty-two billion, two hundred eleven million, two hundred twenty-two thousand, one hundred seventy-two".