212551504372 has 12 divisors (see below), whose sum is σ = 372848663236. Its totient is φ = 106023314880.

The previous prime is 212551504369. The next prime is 212551504387. The reversal of 212551504372 is 273405155212.

It can be written as a sum of positive squares in 2 ways, for example, as 23566548196 + 188984956176 = 153514^2 + 434724^2 .

It is a super-2 number, since 2×212551504372² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63107433 + ... + 63110800.

Almost surely, 2^212551504372 is an apocalyptic number.

It is an amenable number.

212551504372 is a deficient number, since it is larger than the sum of its proper divisors (160297158864).

212551504372 is a wasteful number, since it uses less digits than its factorization.

212551504372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126218658 (or 126218656 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

Adding to 212551504372 its reverse (273405155212), we get a palindrome (485956659584).

The spelling of 212551504372 in words is "two hundred twelve billion, five hundred fifty-one million, five hundred four thousand, three hundred seventy-two".