22212020002121 has 2 divisors, whose sum is σ = 22212020002122. Its totient is φ = 22212020002120.

The previous prime is 22212020002037. The next prime is 22212020002141. The reversal of 22212020002121 is 12120002021222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17623581822025 + 4588438180096 = 4198045^2 + 2142064^2 .

It is a cyclic number.

It is not a de Polignac number, because 22212020002121 - 2³⁰ = 22210946260297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22212020002121.

It is not a weakly prime, because it can be changed into another prime (22212020002141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11106010001060 + 11106010001061.

It is an arithmetic number, because the mean of its divisors is an integer number (11106010001061).

Almost surely, 2^{22212020002121} is an apocalyptic number.

It is an amenable number.

22212020002121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22212020002121 is an equidigital number, since it uses as much as digits as its factorization.

22212020002121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22212020002121 its reverse (12120002021222), we get a palindrome (34332022023343).

The spelling of 22212020002121 in words is "twenty-two trillion, two hundred twelve billion, twenty million, two thousand, one hundred twenty-one".