210212155320 has 64 divisors (see below), whose sum is σ = 631729631520. Its totient is φ = 55959404544.

The previous prime is 210212155291. The next prime is 210212155379. The reversal of 210212155320 is 23551212012.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1448757 + ... + 1587236.

Almost surely, 2^210212155320 is an apocalyptic number.

210212155320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210212155320 is an abundant number, since it is smaller than the sum of its proper divisors (421517476200).

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

210212155320 is a wasteful number, since it uses less digits than its factorization.

210212155320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036584 (or 3036580 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 210212155320 its reverse (23551212012), we get a palindrome (233763367332).

The spelling of 210212155320 in words is "two hundred ten billion, two hundred twelve million, one hundred fifty-five thousand, three hundred twenty".