212144222131 has 4 divisors (see below), whose sum is σ = 212145205264. Its totient is φ = 212143239000.

The previous prime is 212144222117. The next prime is 212144222149. The reversal of 212144222131 is 131222441212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 212144222131 - 2⁵ = 212144222099 is a prime.

It is a super-2 number, since 2×212144222131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212144222096 and 212144222105.

It is not an unprimeable number, because it can be changed into a prime (212144202131) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11820 + ... + 651481.

It is an arithmetic number, because the mean of its divisors is an integer number (53036301316).

Almost surely, 2^212144222131 is an apocalyptic number.

212144222131 is a deficient number, since it is larger than the sum of its proper divisors (983133).

212144222131 is an equidigital number, since it uses as much as digits as its factorization.

212144222131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983132.

The product of its digits is 1536, while the sum is 25.

Adding to 212144222131 its reverse (131222441212), we get a palindrome (343366663343).

The spelling of 212144222131 in words is "two hundred twelve billion, one hundred forty-four million, two hundred twenty-two thousand, one hundred thirty-one".