121154754747 has 32 divisors (see below), whose sum is σ = 178836992320. Its totient is φ = 72472942080.

The previous prime is 121154754739. The next prime is 121154754761. The reversal of 121154754747 is 747457451121.

It is not a de Polignac number, because 121154754747 - 2³ = 121154754739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121154754696 and 121154754705.

It is not an unprimeable number, because it can be changed into a prime (121154754767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1503297 + ... + 1581837.

It is an arithmetic number, because the mean of its divisors is an integer number (5588656010).

Almost surely, 2^121154754747 is an apocalyptic number.

121154754747 is a deficient number, since it is larger than the sum of its proper divisors (57682237573).

121154754747 is a wasteful number, since it uses less digits than its factorization.

121154754747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79663.

The product of its digits is 1097600, while the sum is 48.

The spelling of 121154754747 in words is "one hundred twenty-one billion, one hundred fifty-four million, seven hundred fifty-four thousand, seven hundred forty-seven".