121201010993 has 4 divisors (see below), whose sum is σ = 121309517940. Its totient is φ = 121092504048.

The previous prime is 121201010989. The next prime is 121201010999. The reversal of 121201010993 is 399010102121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20428413184 + 100772597809 = 142928^2 + 317447^2 .

It is a cyclic number.

It is not a de Polignac number, because 121201010993 - 2² = 121201010989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121201010999) 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, 54251798 + ... + 54254031.

It is an arithmetic number, because the mean of its divisors is an integer number (30327379485).

Almost surely, 2^121201010993 is an apocalyptic number.

It is an amenable number.

121201010993 is a deficient number, since it is larger than the sum of its proper divisors (108506947).

121201010993 is a wasteful number, since it uses less digits than its factorization.

121201010993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108506946.

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 121201010993 in words is "one hundred twenty-one billion, two hundred one million, ten thousand, nine hundred ninety-three".