121210122211001 has 2 divisors, whose sum is σ = 121210122211002. Its totient is φ = 121210122211000.

The previous prime is 121210122210941. The next prime is 121210122211043. The reversal of 121210122211001 is 100112221012121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119981791104400 + 1228331106601 = 10953620^2 + 1108301^2 .

It is a cyclic number.

It is not a de Polignac number, because 121210122211001 - 2²² = 121210118016697 is a prime.

It is not a weakly prime, because it can be changed into another prime (121210122211501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605061105500 + 60605061105501.

It is an arithmetic number, because the mean of its divisors is an integer number (60605061105501).

Almost surely, 2^{121210122211001} is an apocalyptic number.

It is an amenable number.

121210122211001 is a deficient number, since it is larger than the sum of its proper divisors (1).

121210122211001 is an equidigital number, since it uses as much as digits as its factorization.

121210122211001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121210122211001 its reverse (100112221012121), we get a palindrome (221322343223122).

The spelling of 121210122211001 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred twenty-two million, two hundred eleven thousand, one".