121220201002163 has 2 divisors, whose sum is σ = 121220201002164. Its totient is φ = 121220201002162.

The previous prime is 121220201002111. The next prime is 121220201002231. The reversal of 121220201002163 is 361200102022121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121220201002163 - 2¹⁸ = 121220200740019 is a prime.

It is not a weakly prime, because it can be changed into another prime (121220201002363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610100501081 + 60610100501082.

It is an arithmetic number, because the mean of its divisors is an integer number (60610100501082).

Almost surely, 2^{121220201002163} is an apocalyptic number.

121220201002163 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220201002163 is an equidigital number, since it uses as much as digits as its factorization.

121220201002163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 121220201002163 its reverse (361200102022121), we get a palindrome (482420303024284).

The spelling of 121220201002163 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred one million, two thousand, one hundred sixty-three".