121377151140 has 192 divisors, whose sum is σ = 417048403968. Its totient is φ = 25743513600.

The previous prime is 121377151139. The next prime is 121377151151. The reversal of 121377151140 is 41151773121.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 387225 + ... + 626655.

It is an arithmetic number, because the mean of its divisors is an integer number (2172127104).

Almost surely, 2^121377151140 is an apocalyptic number.

121377151140 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 121377151140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208524201984).

121377151140 is an abundant number, since it is smaller than the sum of its proper divisors (295671252828).

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

121377151140 is a wasteful number, since it uses less digits than its factorization.

121377151140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239538 (or 239536 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 33.

The spelling of 121377151140 in words is "one hundred twenty-one billion, three hundred seventy-seven million, one hundred fifty-one thousand, one hundred forty".