212130037556 has 12 divisors (see below), whose sum is σ = 371678637792. Its totient is φ = 105936141048.

The previous prime is 212130037543. The next prime is 212130037577. The reversal of 212130037556 is 655730031212.

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, 32215730 + ... + 32222313.

It is an arithmetic number, because the mean of its divisors is an integer number (30973219816).

Almost surely, 2^212130037556 is an apocalyptic number.

It is an amenable number.

212130037556 is a deficient number, since it is larger than the sum of its proper divisors (159548600236).

212130037556 is a wasteful number, since it uses less digits than its factorization.

212130037556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64438870 (or 64438868 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 35.

Adding to 212130037556 its reverse (655730031212), we get a palindrome (867860068768).

The spelling of 212130037556 in words is "two hundred twelve billion, one hundred thirty million, thirty-seven thousand, five hundred fifty-six".