121004305513 has 16 divisors (see below), whose sum is σ = 148942958976. Its totient is φ = 95730295680.

The previous prime is 121004305501. The next prime is 121004305561. The reversal of 121004305513 is 315503400121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121004305513 - 2⁵ = 121004305481 is a prime.

It is a super-3 number, since 3×121004305513³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121004305013) 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, 957045 + ... + 1076077.

It is an arithmetic number, because the mean of its divisors is an integer number (9308934936).

Almost surely, 2^121004305513 is an apocalyptic number.

121004305513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121004305513 is a deficient number, since it is larger than the sum of its proper divisors (27938653463).

121004305513 is a wasteful number, since it uses less digits than its factorization.

121004305513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130224.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 121004305513 its reverse (315503400121), we get a palindrome (436507705634).

The spelling of 121004305513 in words is "one hundred twenty-one billion, four million, three hundred five thousand, five hundred thirteen".