121203058997 has 2 divisors, whose sum is σ = 121203058998. Its totient is φ = 121203058996.

The previous prime is 121203058909. The next prime is 121203059051. The reversal of 121203058997 is 799850302121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61761693361 + 59441365636 = 248519^2 + 243806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121203058997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121203058297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601529498 + 60601529499.

It is an arithmetic number, because the mean of its divisors is an integer number (60601529499).

Almost surely, 2^121203058997 is an apocalyptic number.

It is an amenable number.

121203058997 is a deficient number, since it is larger than the sum of its proper divisors (1).

121203058997 is an equidigital number, since it uses as much as digits as its factorization.

121203058997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 121203058997 in words is "one hundred twenty-one billion, two hundred three million, fifty-eight thousand, nine hundred ninety-seven".