121233144 has 32 divisors (see below), whose sum is σ = 307239120. Its totient is φ = 39856896.

The previous prime is 121233131. The next prime is 121233181. The reversal of 121233144 is 441332121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121233144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32847 + ... + 36350.

Almost surely, 2^121233144 is an apocalyptic number.

It is an amenable number.

121233144 is an abundant number, since it is smaller than the sum of its proper divisors (186005976).

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

121233144 is a wasteful number, since it uses less digits than its factorization.

121233144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69279 (or 69275 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 121233144 is about 11010.5923546374. The cubic root of 121233144 is about 494.9262128562.

Adding to 121233144 its reverse (441332121), we get a palindrome (562565265).

The spelling of 121233144 in words is "one hundred twenty-one million, two hundred thirty-three thousand, one hundred forty-four".