121280012854 has 64 divisors (see below), whose sum is σ = 250213888512. Its totient is φ = 42553324800.

The previous prime is 121280012831. The next prime is 121280012881. The reversal of 121280012854 is 458210082121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 656692 + ... + 820855.

It is an arithmetic number, because the mean of its divisors is an integer number (3909592008).

Almost surely, 2^121280012854 is an apocalyptic number.

121280012854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121280012854 is an abundant number, since it is smaller than the sum of its proper divisors (128933875658).

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

121280012854 is a wasteful number, since it uses less digits than its factorization.

121280012854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477621.

The product of its (nonzero) digits is 10240, while the sum is 34.

Adding to 121280012854 its reverse (458210082121), we get a palindrome (579490094975).

The spelling of 121280012854 in words is "one hundred twenty-one billion, two hundred eighty million, twelve thousand, eight hundred fifty-four".