212202222031 has 4 divisors (see below), whose sum is σ = 212463877864. Its totient is φ = 211940566200.

The previous prime is 212202222013. The next prime is 212202222091. The reversal of 212202222031 is 130222202212.

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 212202222031 - 2⁹ = 212202221519 is a prime.

It is a super-2 number, since 2×212202222031² (a number of 23 digits) 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 (212202222091) 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, 130826700 + ... + 130828321.

It is an arithmetic number, because the mean of its divisors is an integer number (53115969466).

Almost surely, 2^212202222031 is an apocalyptic number.

212202222031 is a deficient number, since it is larger than the sum of its proper divisors (261655833).

212202222031 is an equidigital number, since it uses as much as digits as its factorization.

212202222031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261655832.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 212202222031 its reverse (130222202212), we get a palindrome (342424424243).

The spelling of 212202222031 in words is "two hundred twelve billion, two hundred two million, two hundred twenty-two thousand, thirty-one".