22302021223121 has 4 divisors (see below), whose sum is σ = 22305955259700. Its totient is φ = 22298087186544.

The previous prime is 22302021223057. The next prime is 22302021223177. The reversal of 22302021223121 is 12132212020322.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3638800414096 + 18663220809025 = 1907564^2 + 4320095^2 .

It is a cyclic number.

It is not a de Polignac number, because 22302021223121 - 2⁶ = 22302021223057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22302021228121) 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, 1967009786 + ... + 1967021123.

It is an arithmetic number, because the mean of its divisors is an integer number (5576488814925).

Almost surely, 2^{22302021223121} is an apocalyptic number.

It is an amenable number.

22302021223121 is a deficient number, since it is larger than the sum of its proper divisors (3934036579).

22302021223121 is an equidigital number, since it uses as much as digits as its factorization.

22302021223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3934036578.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 22302021223121 its reverse (12132212020322), we get a palindrome (34434233243443).

The spelling of 22302021223121 in words is "twenty-two trillion, three hundred two billion, twenty-one million, two hundred twenty-three thousand, one hundred twenty-one".