121201012997 has 4 divisors (see below), whose sum is σ = 121325068236. Its totient is φ = 121076957760.

The previous prime is 121201012943. The next prime is 121201013039. The reversal of 121201012997 is 799210102121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 799210102121 = 941 ⋅849319981.

It can be written as a sum of positive squares in 2 ways, for example, as 111338338276 + 9862674721 = 333674^2 + 99311^2 .

It is a cyclic number.

It is not a de Polignac number, because 121201012997 - 2²⁸ = 120932577541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201018997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62026154 + ... + 62028107.

It is an arithmetic number, because the mean of its divisors is an integer number (30331267059).

Almost surely, 2^121201012997 is an apocalyptic number.

It is an amenable number.

121201012997 is a deficient number, since it is larger than the sum of its proper divisors (124055239).

121201012997 is an equidigital number, since it uses as much as digits as its factorization.

121201012997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124055238.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 121201012997 in words is "one hundred twenty-one billion, two hundred one million, twelve thousand, nine hundred ninety-seven".