212291970207 has 4 divisors (see below), whose sum is σ = 283055960280. Its totient is φ = 141527980136.

The previous prime is 212291970199. The next prime is 212291970211. The reversal of 212291970207 is 702079192212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212291970207 - 2³ = 212291970199 is a prime.

It is a super-2 number, since 2×212291970207² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212291970227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35381995032 + ... + 35381995037.

It is an arithmetic number, because the mean of its divisors is an integer number (70763990070).

Almost surely, 2^212291970207 is an apocalyptic number.

212291970207 is a deficient number, since it is larger than the sum of its proper divisors (70763990073).

212291970207 is an equidigital number, since it uses as much as digits as its factorization.

212291970207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70763990072.

The product of its (nonzero) digits is 63504, while the sum is 42.

The spelling of 212291970207 in words is "two hundred twelve billion, two hundred ninety-one million, nine hundred seventy thousand, two hundred seven".