212240105331 has 16 divisors (see below), whose sum is σ = 293631352224. Its totient is φ = 136249979904.

The previous prime is 212240105293. The next prime is 212240105347. The reversal of 212240105331 is 133501042212.

It is not a de Polignac number, because 212240105331 - 2⁶ = 212240105267 is a prime.

It is a super-2 number, since 2×212240105331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212240105431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9845280 + ... + 9866813.

It is an arithmetic number, because the mean of its divisors is an integer number (18351959514).

Almost surely, 2^212240105331 is an apocalyptic number.

212240105331 is a deficient number, since it is larger than the sum of its proper divisors (81391246893).

212240105331 is a wasteful number, since it uses less digits than its factorization.

212240105331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19712230.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 212240105331 its reverse (133501042212), we get a palindrome (345741147543).

The spelling of 212240105331 in words is "two hundred twelve billion, two hundred forty million, one hundred five thousand, three hundred thirty-one".