121000232515 has 16 divisors (see below), whose sum is σ = 148019332608. Its totient is φ = 94922778496.

The previous prime is 121000232489. The next prime is 121000232539. The reversal of 121000232515 is 515232000121.

It is a cyclic number.

It is not a de Polignac number, because 121000232515 - 2¹¹ = 121000230467 is a prime.

It is a Duffinian 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, 375774 + ... + 619036.

It is an arithmetic number, because the mean of its divisors is an integer number (9251208288).

Almost surely, 2^121000232515 is an apocalyptic number.

121000232515 is a deficient number, since it is larger than the sum of its proper divisors (27019100093).

121000232515 is a wasteful number, since it uses less digits than its factorization.

121000232515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245198.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 121000232515 its reverse (515232000121), we get a palindrome (636232232636).

The spelling of 121000232515 in words is "one hundred twenty-one billion, two hundred thirty-two thousand, five hundred fifteen".