22010532221 has 4 divisors (see below), whose sum is σ = 22013450844. Its totient is φ = 22007613600.

The previous prime is 22010532211. The next prime is 22010532241. The reversal of 22010532221 is 12223501022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12223501022 = 2 ⋅6111750511.

It can be written as a sum of positive squares in 2 ways, for example, as 16090922500 + 5919609721 = 126850^2 + 76939^2 .

It is a cyclic number.

It is not a de Polignac number, because 22010532221 - 2²⁶ = 21943423357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22010532193 and 22010532202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010532211) 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, 1447970 + ... + 1463091.

It is an arithmetic number, because the mean of its divisors is an integer number (5503362711).

Almost surely, 2^22010532221 is an apocalyptic number.

It is an amenable number.

22010532221 is a deficient number, since it is larger than the sum of its proper divisors (2918623).

22010532221 is an equidigital number, since it uses as much as digits as its factorization.

22010532221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918622.

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

The spelling of 22010532221 in words is "twenty-two billion, ten million, five hundred thirty-two thousand, two hundred twenty-one".