222010021091 has 4 divisors (see below), whose sum is σ = 224504515800. Its totient is φ = 219515526384.

The previous prime is 222010021063. The next prime is 222010021109. The reversal of 222010021091 is 190120010222.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222010021091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222010021291) 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, 1247247221 + ... + 1247247398.

It is an arithmetic number, because the mean of its divisors is an integer number (56126128950).

Almost surely, 2^222010021091 is an apocalyptic number.

222010021091 is a deficient number, since it is larger than the sum of its proper divisors (2494494709).

222010021091 is an equidigital number, since it uses as much as digits as its factorization.

222010021091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494494708.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 222010021091 in words is "two hundred twenty-two billion, ten million, twenty-one thousand, ninety-one".