121424732155 has 8 divisors (see below), whose sum is σ = 145721045232. Its totient is φ = 97132207968.

The previous prime is 121424732101. The next prime is 121424732189. The reversal of 121424732155 is 551237424121.

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

It is a cyclic number.

It is not a de Polignac number, because 121424732155 - 2⁷ = 121424732027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 876232 + ... + 1005301.

It is an arithmetic number, because the mean of its divisors is an integer number (18215130654).

Almost surely, 2^121424732155 is an apocalyptic number.

121424732155 is a deficient number, since it is larger than the sum of its proper divisors (24296313077).

121424732155 is a wasteful number, since it uses less digits than its factorization.

121424732155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894445.

The product of its digits is 67200, while the sum is 37.

The spelling of 121424732155 in words is "one hundred twenty-one billion, four hundred twenty-four million, seven hundred thirty-two thousand, one hundred fifty-five".