122791285000 has 40 divisors (see below), whose sum is σ = 287699992470. Its totient is φ = 49116512000.

The previous prime is 122791284991. The next prime is 122791285003. The reversal of 122791285000 is 582197221.

It can be written as a sum of positive squares in 5 ways, for example, as 17624686564 + 105166598436 = 132758^2 + 324294^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (122791285003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12274129 + ... + 12284128.

Almost surely, 2^122791285000 is an apocalyptic number.

122791285000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122791285000 is an abundant number, since it is smaller than the sum of its proper divisors (164908707470).

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

122791285000 is an equidigital number, since it uses as much as digits as its factorization.

122791285000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24558283 (or 24558264 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 122791285000 in words is "one hundred twenty-two billion, seven hundred ninety-one million, two hundred eighty-five thousand".