22120101212021 has 2 divisors, whose sum is σ = 22120101212022. Its totient is φ = 22120101212020.

The previous prime is 22120101211973. The next prime is 22120101212071. The reversal of 22120101212021 is 12021210102122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16404363052900 + 5715738159121 = 4050230^2 + 2390761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22120101212021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22120101212071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060050606010 + 11060050606011.

It is an arithmetic number, because the mean of its divisors is an integer number (11060050606011).

Almost surely, 2^{22120101212021} is an apocalyptic number.

It is an amenable number.

22120101212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22120101212021 is an equidigital number, since it uses as much as digits as its factorization.

22120101212021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22120101212021 its reverse (12021210102122), we get a palindrome (34141311314143).

The spelling of 22120101212021 in words is "twenty-two trillion, one hundred twenty billion, one hundred one million, two hundred twelve thousand, twenty-one".