121231944 has 64 divisors (see below), whose sum is σ = 341822400. Its totient is φ = 39802752.

The previous prime is 121231933. The next prime is 121231969. The reversal of 121231944 is 449132121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

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, 10284 + ... + 18660.

It is an arithmetic number, because the mean of its divisors is an integer number (5340975).

Almost surely, 2^121231944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121231944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170911200).

121231944 is an abundant number, since it is smaller than the sum of its proper divisors (220590456).

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

121231944 is a wasteful number, since it uses less digits than its factorization.

121231944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8459 (or 8449 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 121231944 is about 11010.5378615216. The cubic root of 121231944 is about 494.9245798775.

The spelling of 121231944 in words is "one hundred twenty-one million, two hundred thirty-one thousand, nine hundred forty-four".