12922262021 has 4 divisors (see below), whose sum is σ = 13134102444. Its totient is φ = 12710421600.

The previous prime is 12922262009. The next prime is 12922262033. The reversal of 12922262021 is 12026222921.

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

It is an interprime number because it is at equal distance from previous prime (12922262009) and next prime (12922262033).

It can be written as a sum of positive squares in 2 ways, for example, as 2413756900 + 10508505121 = 49130^2 + 102511^2 .

It is a cyclic number.

It is not a de Polignac number, because 12922262021 - 2²² = 12918067717 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 (12922262051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105920120 + ... + 105920241.

It is an arithmetic number, because the mean of its divisors is an integer number (3283525611).

Almost surely, 2^12922262021 is an apocalyptic number.

It is an amenable number.

12922262021 is a deficient number, since it is larger than the sum of its proper divisors (211840423).

12922262021 is an equidigital number, since it uses as much as digits as its factorization.

12922262021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211840422.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 12922262021 its reverse (12026222921), we get a palindrome (24948484942).

The spelling of 12922262021 in words is "twelve billion, nine hundred twenty-two million, two hundred sixty-two thousand, twenty-one".