121863346240 has 28 divisors (see below), whose sum is σ = 290187093996. Its totient is φ = 48745338368.

The previous prime is 121863346177. The next prime is 121863346271. The reversal of 121863346240 is 42643368121.

It can be written as a sum of positive squares in 2 ways, for example, as 21764510784 + 100098835456 = 147528^2 + 316384^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 121863346193 and 121863346202.

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, 190411159 + ... + 190411798.

Almost surely, 2^121863346240 is an apocalyptic number.

121863346240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121863346240 is an abundant number, since it is smaller than the sum of its proper divisors (168323747756).

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

121863346240 is an equidigital number, since it uses as much as digits as its factorization.

121863346240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380822974 (or 380822964 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 121863346240 in words is "one hundred twenty-one billion, eight hundred sixty-three million, three hundred forty-six thousand, two hundred forty".