21022022033213 has 8 divisors (see below), whose sum is σ = 21025779373368. Its totient is φ = 21018264943104.

The previous prime is 21022022033203. The next prime is 21022022033261. The reversal of 21022022033213 is 31233022022012.

It can be written as a sum of positive squares in 4 ways, for example, as 668597311684 + 20353424721529 = 817678^2 + 4511477^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21022022033213 - 2¹⁴ = 21022022016829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022022033203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254360945 + ... + 254443577.

It is an arithmetic number, because the mean of its divisors is an integer number (2628222421671).

Almost surely, 2^{21022022033213} is an apocalyptic number.

It is an amenable number.

21022022033213 is a deficient number, since it is larger than the sum of its proper divisors (3757340155).

21022022033213 is an equidigital number, since it uses as much as digits as its factorization.

21022022033213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125023.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21022022033213 its reverse (31233022022012), we get a palindrome (52255044055225).

The spelling of 21022022033213 in words is "twenty-one trillion, twenty-two billion, twenty-two million, thirty-three thousand, two hundred thirteen".