121201013015 has 16 divisors (see below), whose sum is σ = 154816207200. Its totient is φ = 90825495552.

The previous prime is 121201012943. The next prime is 121201013039. The reversal of 121201013015 is 510310102121.

It is a cyclic number.

It is not a de Polignac number, because 121201013015 - 2²⁰ = 121199964439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121201012984 and 121201013002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7158962 + ... + 7175871.

It is an arithmetic number, because the mean of its divisors is an integer number (9676012950).

Almost surely, 2^121201013015 is an apocalyptic number.

121201013015 is a deficient number, since it is larger than the sum of its proper divisors (33615194185).

121201013015 is a wasteful number, since it uses less digits than its factorization.

121201013015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14334946.

The product of its (nonzero) digits is 60, while the sum is 17.

Adding to 121201013015 its reverse (510310102121), we get a palindrome (631511115136).

The spelling of 121201013015 in words is "one hundred twenty-one billion, two hundred one million, thirteen thousand, fifteen".