12201404240 has 20 divisors (see below), whose sum is σ = 28368265044. Its totient is φ = 4880561664.

The previous prime is 12201404239. The next prime is 12201404261. The reversal of 12201404240 is 4240410221.

It can be written as a sum of positive squares in 2 ways, for example, as 6532518976 + 5668885264 = 80824^2 + 75292^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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 3 ways as a sum of consecutive naturals, for example, 76258697 + ... + 76258856.

Almost surely, 2^12201404240 is an apocalyptic number.

12201404240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201404240 is an abundant number, since it is smaller than the sum of its proper divisors (16166860804).

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

12201404240 is a wasteful number, since it uses less digits than its factorization.

12201404240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152517566 (or 152517560 counting only the distinct ones).

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

Adding to 12201404240 its reverse (4240410221), we get a palindrome (16441814461).

The spelling of 12201404240 in words is "twelve billion, two hundred one million, four hundred four thousand, two hundred forty".