121444113240 has 160 divisors (see below), whose sum is σ = 421354834560. Its totient is φ = 31340390400.

The previous prime is 121444113179. The next prime is 121444113269. The reversal of 121444113240 is 42311444121.

121444113240 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 4 + 411 + 3 + 240 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 504121 + ... + 705000.

It is an arithmetic number, because the mean of its divisors is an integer number (2633467716).

Almost surely, 2^121444113240 is an apocalyptic number.

121444113240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121444113240 is an abundant number, since it is smaller than the sum of its proper divisors (299910721320).

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

121444113240 is a wasteful number, since it uses less digits than its factorization.

121444113240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209175 (or 1209162 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 121444113240 its reverse (42311444121), we get a palindrome (163755557361).

The spelling of 121444113240 in words is "one hundred twenty-one billion, four hundred forty-four million, one hundred thirteen thousand, two hundred forty".