12440212401 has 16 divisors (see below), whose sum is σ = 16746491520. Its totient is φ = 8213771520.

The previous prime is 12440212271. The next prime is 12440212429. The reversal of 12440212401 is 10421204421.

It is not a de Polignac number, because 12440212401 - 2²³ = 12431823793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12440216401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 879481 + ... + 893513.

It is an arithmetic number, because the mean of its divisors is an integer number (1046655720).

Almost surely, 2^12440212401 is an apocalyptic number.

It is an amenable number.

12440212401 is a deficient number, since it is larger than the sum of its proper divisors (4306279119).

12440212401 is a wasteful number, since it uses less digits than its factorization.

12440212401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16856.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12440212401 its reverse (10421204421), we get a palindrome (22861416822).

The spelling of 12440212401 in words is "twelve billion, four hundred forty million, two hundred twelve thousand, four hundred one".