12220132021 has 2 divisors, whose sum is σ = 12220132022. Its totient is φ = 12220132020.

The previous prime is 12220132003. The next prime is 12220132039. The reversal of 12220132021 is 12023102221.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (12220132003) and next prime (12220132039).

It can be written as a sum of positive squares in only one way, i.e., 11486480625 + 733651396 = 107175^2 + 27086^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220132021 - 2⁹ = 12220131509 is a prime.

It is a super-2 number, since 2×12220132021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12220131986 and 12220132004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220132051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110066010 + 6110066011.

It is an arithmetic number, because the mean of its divisors is an integer number (6110066011).

Almost surely, 2^12220132021 is an apocalyptic number.

It is an amenable number.

12220132021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220132021 is an equidigital number, since it uses as much as digits as its factorization.

12220132021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12220132021 its reverse (12023102221), we get a palindrome (24243234242).

The spelling of 12220132021 in words is "twelve billion, two hundred twenty million, one hundred thirty-two thousand, twenty-one".