22020100121 has 2 divisors, whose sum is σ = 22020100122. Its totient is φ = 22020100120.

The previous prime is 22020100097. The next prime is 22020100127. The reversal of 22020100121 is 12100102022.

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., 13325470096 + 8694630025 = 115436^2 + 93245^2 .

It is a cyclic number.

It is not a de Polignac number, because 22020100121 - 2⁶ = 22020100057 is a prime.

It is not a weakly prime, because it can be changed into another prime (22020100127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010050060 + 11010050061.

It is an arithmetic number, because the mean of its divisors is an integer number (11010050061).

Almost surely, 2^22020100121 is an apocalyptic number.

It is an amenable number.

22020100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22020100121 is an equidigital number, since it uses as much as digits as its factorization.

22020100121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22020100121 its reverse (12100102022), we get a palindrome (34120202143).

The spelling of 22020100121 in words is "twenty-two billion, twenty million, one hundred thousand, one hundred twenty-one".