121332556534 has 32 divisors (see below), whose sum is σ = 210676608000. Its totient is φ = 51330464640.

The previous prime is 121332556463. The next prime is 121332556549. The reversal of 121332556534 is 435655233121.

It is a congruent 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, 7124089 + ... + 7141099.

It is an arithmetic number, because the mean of its divisors is an integer number (6583644000).

Almost surely, 2^121332556534 is an apocalyptic number.

121332556534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121332556534 is a deficient number, since it is larger than the sum of its proper divisors (89344051466).

121332556534 is a wasteful number, since it uses less digits than its factorization.

121332556534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23548.

The product of its digits is 324000, while the sum is 40.

Adding to 121332556534 its reverse (435655233121), we get a palindrome (556987789655).

The spelling of 121332556534 in words is "one hundred twenty-one billion, three hundred thirty-two million, five hundred fifty-six thousand, five hundred thirty-four".