22002202121 has 2 divisors, whose sum is σ = 22002202122. Its totient is φ = 22002202120.

The previous prime is 22002202093. The next prime is 22002202127. The reversal of 22002202121 is 12120220022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17539294096 + 4462908025 = 132436^2 + 66805^2 .

It is a cyclic number.

It is not a de Polignac number, because 22002202121 - 2²² = 21998007817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22002202096 and 22002202105.

It is not a weakly prime, because it can be changed into another prime (22002202127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11001101060 + 11001101061.

It is an arithmetic number, because the mean of its divisors is an integer number (11001101061).

Almost surely, 2^22002202121 is an apocalyptic number.

It is an amenable number.

22002202121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22002202121 is an equidigital number, since it uses as much as digits as its factorization.

22002202121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22002202121 its reverse (12120220022), we get a palindrome (34122422143).

The spelling of 22002202121 in words is "twenty-two billion, two million, two hundred two thousand, one hundred twenty-one".