212164212 has 24 divisors (see below), whose sum is σ = 533130976. Its totient is φ = 65281248.

The previous prime is 212164189. The next prime is 212164219. The reversal of 212164212 is 212461212.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212164219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679858 + ... + 680169.

Almost surely, 2^212164212 is an apocalyptic number.

It is an amenable number.

212164212 is an abundant number, since it is smaller than the sum of its proper divisors (320966764).

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

212164212 is a wasteful number, since it uses less digits than its factorization.

212164212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360047 (or 1360045 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 212164212 is about 14565.8577502322. The cubic root of 212164212 is about 596.4271107802.

The spelling of 212164212 in words is "two hundred twelve million, one hundred sixty-four thousand, two hundred twelve".