121211120020097 has 2 divisors, whose sum is σ = 121211120020098. Its totient is φ = 121211120020096.

The previous prime is 121211120020087. The next prime is 121211120020117. The reversal of 121211120020097 is 790020021112121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120799355247376 + 411764772721 = 10990876^2 + 641689^2 .

It is a cyclic number.

It is not a de Polignac number, because 121211120020097 - 2⁸ = 121211120019841 is a prime.

It is not a weakly prime, because it can be changed into another prime (121211120020087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605560010048 + 60605560010049.

It is an arithmetic number, because the mean of its divisors is an integer number (60605560010049).

Almost surely, 2^{121211120020097} is an apocalyptic number.

It is an amenable number.

121211120020097 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211120020097 is an equidigital number, since it uses as much as digits as its factorization.

121211120020097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 29.

The spelling of 121211120020097 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred twenty million, twenty thousand, ninety-seven".