212399270 has 16 divisors (see below), whose sum is σ = 391644288. Its totient is φ = 82887360.

The previous prime is 212399221. The next prime is 212399279. The reversal of 212399270 is 72993212.

212399270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212399270² = 90226899793065800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212399270.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212399279) 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, 258614 + ... + 259433.

It is an arithmetic number, because the mean of its divisors is an integer number (24477768).

Almost surely, 2^212399270 is an apocalyptic number.

212399270 is a deficient number, since it is larger than the sum of its proper divisors (179245018).

212399270 is a wasteful number, since it uses less digits than its factorization.

212399270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518095.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 212399270 is about 14573.9243170808. The cubic root of 212399270 is about 596.6472912087.

The spelling of 212399270 in words is "two hundred twelve million, three hundred ninety-nine thousand, two hundred seventy".