212223223091 has 16 divisors (see below), whose sum is σ = 235427738208. Its totient is φ = 189673747200.

The previous prime is 212223223087. The next prime is 212223223181. The reversal of 212223223091 is 190322322212.

It is a cyclic number.

It is not a de Polignac number, because 212223223091 - 2² = 212223223087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212223223021) 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, 1300535 + ... + 1454591.

It is an arithmetic number, because the mean of its divisors is an integer number (14714233638).

Almost surely, 2^212223223091 is an apocalyptic number.

212223223091 is a deficient number, since it is larger than the sum of its proper divisors (23204515117).

212223223091 is a wasteful number, since it uses less digits than its factorization.

212223223091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156182.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 212223223091 in words is "two hundred twelve billion, two hundred twenty-three million, two hundred twenty-three thousand, ninety-one".