212150512120 has 64 divisors (see below), whose sum is σ = 493275990240. Its totient is φ = 82065984000.

The previous prime is 212150512109. The next prime is 212150512139. The reversal of 212150512120 is 21215051212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212150512091 and 212150512100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436891 + ... + 784330.

Almost surely, 2^212150512120 is an apocalyptic number.

212150512120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212150512120 is an abundant number, since it is smaller than the sum of its proper divisors (281125478120).

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

212150512120 is a wasteful number, since it uses less digits than its factorization.

212150512120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221376 (or 1221372 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 212150512120 its reverse (21215051212), we get a palindrome (233365563332).

The spelling of 212150512120 in words is "two hundred twelve billion, one hundred fifty million, five hundred twelve thousand, one hundred twenty".