121013000001 has 16 divisors (see below), whose sum is σ = 185460537600. Its totient is φ = 77893424784.

The previous prime is 121012999999. The next prime is 121013000041. The reversal of 121013000001 is 100000310121.

It is not a de Polignac number, because 121013000001 - 2¹ = 121012999999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (121013000041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77274441 + ... + 77276006.

It is an arithmetic number, because the mean of its divisors is an integer number (11591283600).

Almost surely, 2^121013000001 is an apocalyptic number.

It is an amenable number.

121013000001 is a deficient number, since it is larger than the sum of its proper divisors (64447537599).

121013000001 is a wasteful number, since it uses less digits than its factorization.

121013000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154550485 (or 154550479 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 121013000001 its reverse (100000310121), we get a palindrome (221013310122).

The spelling of 121013000001 in words is "one hundred twenty-one billion, thirteen million, one", and thus it is an aban number.