121521430054 has 8 divisors (see below), whose sum is σ = 182325985920. Its totient is φ = 60746101416.

The previous prime is 121521430049. The next prime is 121521430081. The reversal of 121521430054 is 450034125121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7296409 + ... + 7313044.

It is an arithmetic number, because the mean of its divisors is an integer number (22790748240).

Almost surely, 2^121521430054 is an apocalyptic number.

121521430054 is a deficient number, since it is larger than the sum of its proper divisors (60804555866).

121521430054 is a wasteful number, since it uses less digits than its factorization.

121521430054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14613614.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 121521430054 its reverse (450034125121), we get a palindrome (571555555175).

The spelling of 121521430054 in words is "one hundred twenty-one billion, five hundred twenty-one million, four hundred thirty thousand, fifty-four".