212244231240 has 96 divisors (see below), whose sum is σ = 689910436800. Its totient is φ = 56588887680.

The previous prime is 212244231223. The next prime is 212244231253. The reversal of 212244231240 is 42132442212.

It is a happy number.

212244231240 is a `hidden beast` number, since 2 + 1 + 224 + 423 + 12 + 4 + 0 = 666.

It is a super-2 number, since 2×212244231240² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2225251 + ... + 2318669.

It is an arithmetic number, because the mean of its divisors is an integer number (7186567050).

Almost surely, 2^212244231240 is an apocalyptic number.

212244231240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212244231240 is an abundant number, since it is smaller than the sum of its proper divisors (477666205560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212244231240 is a wasteful number, since it uses less digits than its factorization.

212244231240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99747 (or 99740 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 212244231240 its reverse (42132442212), we get a palindrome (254376673452).

The spelling of 212244231240 in words is "two hundred twelve billion, two hundred forty-four million, two hundred thirty-one thousand, two hundred forty".