121210211122001 has 2 divisors, whose sum is σ = 121210211122002. Its totient is φ = 121210211122000.

The previous prime is 121210211121931. The next prime is 121210211122087. The reversal of 121210211122001 is 100221112012121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88041814963600 + 33168396158401 = 9383060^2 + 5759201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121210211122001 is a prime.

It is not a weakly prime, because it can be changed into another prime (121210211322001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605105561000 + 60605105561001.

It is an arithmetic number, because the mean of its divisors is an integer number (60605105561001).

Almost surely, 2^{121210211122001} is an apocalyptic number.

It is an amenable number.

121210211122001 is a deficient number, since it is larger than the sum of its proper divisors (1).

121210211122001 is an equidigital number, since it uses as much as digits as its factorization.

121210211122001 is an evil number, because the sum of its binary digits is even.

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

Adding to 121210211122001 its reverse (100221112012121), we get a palindrome (221431323134122).

The spelling of 121210211122001 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred eleven million, one hundred twenty-two thousand, one".