27221251131 has 12 divisors (see below), whose sum is σ = 39329493840. Its totient is φ = 18142927440.

The previous prime is 27221251117. The next prime is 27221251133. The reversal of 27221251131 is 13115212272.

It is a happy number.

27221251131 is a `hidden beast` number, since 272 + 212 + 51 + 131 = 666.

It is not a de Polignac number, because 27221251131 - 2⁶ = 27221251067 is a prime.

It is a super-2 number, since 2×27221251131² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27221251095 and 27221251104.

It is not an unprimeable number, because it can be changed into a prime (27221251133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343215 + ... + 415016.

It is an arithmetic number, because the mean of its divisors is an integer number (3277457820).

Almost surely, 2^27221251131 is an apocalyptic number.

27221251131 is a deficient number, since it is larger than the sum of its proper divisors (12108242709).

27221251131 is a wasteful number, since it uses less digits than its factorization.

27221251131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762226 (or 762223 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The spelling of 27221251131 in words is "twenty-seven billion, two hundred twenty-one million, two hundred fifty-one thousand, one hundred thirty-one".