212491070 has 32 divisors (see below), whose sum is σ = 419459040. Its totient is φ = 76861440.

The previous prime is 212491067. The next prime is 212491073. The reversal of 212491070 is 70194212.

It is an interprime number because it is at equal distance from previous prime (212491067) and next prime (212491073).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212491073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16226 + ... + 26234.

It is an arithmetic number, because the mean of its divisors is an integer number (13108095).

Almost surely, 2^212491070 is an apocalyptic number.

212491070 is a deficient number, since it is larger than the sum of its proper divisors (206967970).

212491070 is a wasteful number, since it uses less digits than its factorization.

212491070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10220.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 212491070 is about 14577.0734374222. The cubic root of 212491070 is about 596.7332367839.

The spelling of 212491070 in words is "two hundred twelve million, four hundred ninety-one thousand, seventy".