212400210 has 64 divisors (see below), whose sum is σ = 588829824. Its totient is φ = 48460800.

The previous prime is 212400179. The next prime is 212400211. The reversal of 212400210 is 12004212.

It is a super-2 number, since 2×212400210² = 90227698416088200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212400211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13321 + ... + 24540.

It is an arithmetic number, because the mean of its divisors is an integer number (9200466).

Almost surely, 2^212400210 is an apocalyptic number.

212400210 is an abundant number, since it is smaller than the sum of its proper divisors (376429614).

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

212400210 is a wasteful number, since it uses less digits than its factorization.

212400210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37899.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 212400210 is about 14573.9565664235. The cubic root of 212400210 is about 596.6481713869.

Adding to 212400210 its reverse (12004212), we get a palindrome (224404422).

The spelling of 212400210 in words is "two hundred twelve million, four hundred thousand, two hundred ten".