212561333700 has 36 divisors (see below), whose sum is σ = 615010793040. Its totient is φ = 56683022240.

The previous prime is 212561333687. The next prime is 212561333713. The reversal of 212561333700 is 7333165212.

212561333700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212561333687) and next prime (212561333713).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 354268590 + ... + 354269189.

It is an arithmetic number, because the mean of its divisors is an integer number (17083633140).

Almost surely, 2^212561333700 is an apocalyptic number.

212561333700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212561333700 is an abundant number, since it is smaller than the sum of its proper divisors (402449459340).

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

212561333700 is a wasteful number, since it uses less digits than its factorization.

212561333700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708537796 (or 708537789 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

Adding to 212561333700 its reverse (7333165212), we get a palindrome (219894498912).

The spelling of 212561333700 in words is "two hundred twelve billion, five hundred sixty-one million, three hundred thirty-three thousand, seven hundred".