212361216510 has 32 divisors (see below), whose sum is σ = 531826352640. Its totient is φ = 54167498528.

The previous prime is 212361216499. The next prime is 212361216541. The reversal of 212361216510 is 15612163212.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 153884250 + ... + 153885629.

It is an arithmetic number, because the mean of its divisors is an integer number (16619573520).

Almost surely, 2^212361216510 is an apocalyptic number.

212361216510 is an abundant number, since it is smaller than the sum of its proper divisors (319465136130).

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

212361216510 is a wasteful number, since it uses less digits than its factorization.

212361216510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307769912.

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 212361216510 its reverse (15612163212), we get a palindrome (227973379722).

The spelling of 212361216510 in words is "two hundred twelve billion, three hundred sixty-one million, two hundred sixteen thousand, five hundred ten".