121273000380 has 144 divisors (see below), whose sum is σ = 421037023680. Its totient is φ = 27678403584.

The previous prime is 121273000379. The next prime is 121273000399. The reversal of 121273000380 is 83000372121.

121273000380 is a `hidden beast` number, since 1 + 212 + 73 + 0 + 0 + 0 + 380 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 781936 + ... + 924104.

It is an arithmetic number, because the mean of its divisors is an integer number (2923868220).

Almost surely, 2^121273000380 is an apocalyptic number.

121273000380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121273000380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210518511840).

121273000380 is an abundant number, since it is smaller than the sum of its proper divisors (299764023300).

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

121273000380 is a wasteful number, since it uses less digits than its factorization.

121273000380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142868 (or 142863 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The spelling of 121273000380 in words is "one hundred twenty-one billion, two hundred seventy-three million, three hundred eighty", and thus it is an aban number.