121511672003 has 16 divisors (see below), whose sum is σ = 124690828800. Its totient is φ = 118372423680.

The previous prime is 121511671951. The next prime is 121511672017. The reversal of 121511672003 is 300276115121.

It is a cyclic number.

It is not a de Polignac number, because 121511672003 - 2¹⁰ = 121511670979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121511672083) 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, 10257758 + ... + 10269596.

It is an arithmetic number, because the mean of its divisors is an integer number (7793176800).

Almost surely, 2^121511672003 is an apocalyptic number.

121511672003 is a deficient number, since it is larger than the sum of its proper divisors (3179156797).

121511672003 is a wasteful number, since it uses less digits than its factorization.

121511672003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13502.

The product of its (nonzero) digits is 2520, while the sum is 29.

Adding to 121511672003 its reverse (300276115121), we get a palindrome (421787787124).

The spelling of 121511672003 in words is "one hundred twenty-one billion, five hundred eleven million, six hundred seventy-two thousand, three".