122781099843072 has 160 divisors (see below), whose sum is σ = 396480635400960. Its totient is φ = 37206393845760.

The previous prime is 122781099843053. The next prime is 122781099843169. The reversal of 122781099843072 is 270348990187221.

122781099843072 is a `hidden beast` number, since 1 + 2 + 2 + 7 + 8 + 109 + 98 + 430 + 7 + 2 = 666.

It is a congruent number.

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, 403563148 + ... + 403867275.

It is an arithmetic number, because the mean of its divisors is an integer number (2478003971256).

Almost surely, 2^{122781099843072} is an apocalyptic number.

122781099843072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122781099843072 is an abundant number, since it is smaller than the sum of its proper divisors (273699535557888).

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

122781099843072 is an equidigital number, since it uses as much as digits as its factorization.

122781099843072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807430461 (or 807430439 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 122781099843072 in words is "one hundred twenty-two trillion, seven hundred eighty-one billion, ninety-nine million, eight hundred forty-three thousand, seventy-two".