221240858131 has 8 divisors (see below), whose sum is σ = 226709724528. Its totient is φ = 215775456000.

The previous prime is 221240858107. The next prime is 221240858141. The reversal of 221240858131 is 131858042122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221240858131 - 2³³ = 212650923539 is a prime.

It is a super-2 number, since 2×221240858131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221240858101) 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, 736525 + ... + 992446.

It is an arithmetic number, because the mean of its divisors is an integer number (28338715566).

Almost surely, 2^221240858131 is an apocalyptic number.

221240858131 is a deficient number, since it is larger than the sum of its proper divisors (5468866397).

221240858131 is a wasteful number, since it uses less digits than its factorization.

221240858131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732133.

The product of its (nonzero) digits is 30720, while the sum is 37.

The spelling of 221240858131 in words is "two hundred twenty-one billion, two hundred forty million, eight hundred fifty-eight thousand, one hundred thirty-one".