121777046148 has 48 divisors (see below), whose sum is σ = 289654698816. Its totient is φ = 39806232960.

The previous prime is 121777046119. The next prime is 121777046173. The reversal of 121777046148 is 841640777121.

It is a junction number, because it is equal to n+sod(n) for n = 121777046097 and 121777046106.

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, 1231390 + ... + 1326602.

It is an arithmetic number, because the mean of its divisors is an integer number (6034472892).

Almost surely, 2^121777046148 is an apocalyptic number.

It is an amenable number.

121777046148 is an abundant number, since it is smaller than the sum of its proper divisors (167877652668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121777046148 is a wasteful number, since it uses less digits than its factorization.

121777046148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97284 (or 97282 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 48.

The spelling of 121777046148 in words is "one hundred twenty-one billion, seven hundred seventy-seven million, forty-six thousand, one hundred forty-eight".