12220102021 has 2 divisors, whose sum is σ = 12220102022. Its totient is φ = 12220102020.

The previous prime is 12220101989. The next prime is 12220102057. The reversal of 12220102021 is 12020102221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10653129796 + 1566972225 = 103214^2 + 39585^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220102021 - 2⁵ = 12220101989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12220101992 and 12220102010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220102421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110051010 + 6110051011.

It is an arithmetic number, because the mean of its divisors is an integer number (6110051011).

Almost surely, 2^12220102021 is an apocalyptic number.

It is an amenable number.

12220102021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220102021 is an equidigital number, since it uses as much as digits as its factorization.

12220102021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12220102021 its reverse (12020102221), we get a palindrome (24240204242).

The spelling of 12220102021 in words is "twelve billion, two hundred twenty million, one hundred two thousand, twenty-one".