212252231 has 4 divisors (see below), whose sum is σ = 212463600. Its totient is φ = 212040864.

The previous prime is 212252221. The next prime is 212252251. The reversal of 212252231 is 132252212.

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 212252231 - 2⁶ = 212252167 is a prime.

It is a super-2 number, since 2×212252231² = 90102019128954722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212252221) 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, 104171 + ... + 106188.

It is an arithmetic number, because the mean of its divisors is an integer number (53115900).

Almost surely, 2^212252231 is an apocalyptic number.

212252231 is a deficient number, since it is larger than the sum of its proper divisors (211369).

212252231 is a wasteful number, since it uses less digits than its factorization.

212252231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211368.

The product of its digits is 480, while the sum is 20.

The square root of 212252231 is about 14568.8788518540. The cubic root of 212252231 is about 596.5095778142.

The spelling of 212252231 in words is "two hundred twelve million, two hundred fifty-two thousand, two hundred thirty-one".