121013201097 has 10 divisors (see below), whose sum is σ = 180772806698. Its totient is φ = 80675467344.

The previous prime is 121013201083. The next prime is 121013201107. The reversal of 121013201097 is 790102310121.

It can be written as a sum of positive squares in only one way, i.e., 84553589961 + 36459611136 = 290781^2 + 190944^2 .

It is not a de Polignac number, because 121013201097 - 2⁷ = 121013200969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121013201097.

It is not an unprimeable number, because it can be changed into a prime (121013200097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 746994988 + ... + 746995149.

Almost surely, 2^121013201097 is an apocalyptic number.

It is an amenable number.

121013201097 is a deficient number, since it is larger than the sum of its proper divisors (59759605601).

121013201097 is an equidigital number, since it uses as much as digits as its factorization.

121013201097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493990149 (or 1493990140 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The spelling of 121013201097 in words is "one hundred twenty-one billion, thirteen million, two hundred one thousand, ninety-seven".