121515021341 has 16 divisors (see below), whose sum is σ = 146765928960. Its totient is φ = 98280702000.

The previous prime is 121515021337. The next prime is 121515021359. The reversal of 121515021341 is 143120515121.

It is a cyclic number.

It is not a de Polignac number, because 121515021341 - 2² = 121515021337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121515021341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121515021941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1786631 + ... + 1853396.

It is an arithmetic number, because the mean of its divisors is an integer number (9172870560).

Almost surely, 2^121515021341 is an apocalyptic number.

It is an amenable number.

121515021341 is a deficient number, since it is larger than the sum of its proper divisors (25250907619).

121515021341 is a wasteful number, since it uses less digits than its factorization.

121515021341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3640304.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 121515021341 its reverse (143120515121), we get a palindrome (264635536462).

The spelling of 121515021341 in words is "one hundred twenty-one billion, five hundred fifteen million, twenty-one thousand, three hundred forty-one".