223021102121 has 2 divisors, whose sum is σ = 223021102122. Its totient is φ = 223021102120.

The previous prime is 223021102081. The next prime is 223021102141. The reversal of 223021102121 is 121201120322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196192300096 + 26828802025 = 442936^2 + 163795^2 .

It is a cyclic number.

It is not a de Polignac number, because 223021102121 - 2¹⁴ = 223021085737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 223021102121.

It is not a weakly prime, because it can be changed into another prime (223021102141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111510551060 + 111510551061.

It is an arithmetic number, because the mean of its divisors is an integer number (111510551061).

Almost surely, 2^223021102121 is an apocalyptic number.

It is an amenable number.

223021102121 is a deficient number, since it is larger than the sum of its proper divisors (1).

223021102121 is an equidigital number, since it uses as much as digits as its factorization.

223021102121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 223021102121 its reverse (121201120322), we get a palindrome (344222222443).

The spelling of 223021102121 in words is "two hundred twenty-three billion, twenty-one million, one hundred two thousand, one hundred twenty-one".