212885131181 has 8 divisors (see below), whose sum is σ = 213935303904. Its totient is φ = 211835347920.

The previous prime is 212885131169. The next prime is 212885131231. The reversal of 212885131181 is 181131588212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 212885131181 - 2³⁰ = 211811389357 is a prime.

It is a super-2 number, since 2×212885131181² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212885130181) 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, 1030670 + ... + 1219856.

It is an arithmetic number, because the mean of its divisors is an integer number (26741912988).

Almost surely, 2^212885131181 is an apocalyptic number.

It is an amenable number.

212885131181 is a deficient number, since it is larger than the sum of its proper divisors (1050172723).

212885131181 is a wasteful number, since it uses less digits than its factorization.

212885131181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194731.

The product of its digits is 30720, while the sum is 41.

The spelling of 212885131181 in words is "two hundred twelve billion, eight hundred eighty-five million, one hundred thirty-one thousand, one hundred eighty-one".