121205504149097 has 2 divisors, whose sum is σ = 121205504149098. Its totient is φ = 121205504149096.

The previous prime is 121205504149087. The next prime is 121205504149127. The reversal of 121205504149097 is 790941405502121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97956626468416 + 23248877680681 = 9897304^2 + 4821709^2 .

It is a cyclic number.

It is not a de Polignac number, because 121205504149097 - 2¹⁶ = 121205504083561 is a prime.

It is not a weakly prime, because it can be changed into another prime (121205504149007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60602752074548 + 60602752074549.

It is an arithmetic number, because the mean of its divisors is an integer number (60602752074549).

Almost surely, 2^{121205504149097} is an apocalyptic number.

It is an amenable number.

121205504149097 is a deficient number, since it is larger than the sum of its proper divisors (1).

121205504149097 is an equidigital number, since it uses as much as digits as its factorization.

121205504149097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 121205504149097 in words is "one hundred twenty-one trillion, two hundred five billion, five hundred four million, one hundred forty-nine thousand, ninety-seven".