12122042240 has 128 divisors (see below), whose sum is σ = 36130129920. Its totient is φ = 3778283520.

The previous prime is 12122042227. The next prime is 12122042269. The reversal of 12122042240 is 4224022121.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 73712 + ... + 172271.

It is an arithmetic number, because the mean of its divisors is an integer number (282266640).

Almost surely, 2^12122042240 is an apocalyptic number.

12122042240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12122042240 is an abundant number, since it is smaller than the sum of its proper divisors (24008087680).

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

12122042240 is a wasteful number, since it uses less digits than its factorization.

12122042240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246020 (or 246008 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12122042240 its reverse (4224022121), we get a palindrome (16346064361).

The spelling of 12122042240 in words is "twelve billion, one hundred twenty-two million, forty-two thousand, two hundred forty".