244400121 has 24 divisors (see below), whose sum is σ = 409482944. Its totient is φ = 137570400.

The previous prime is 244400113. The next prime is 244400153. The reversal of 244400121 is 121004442.

244400121 is a `hidden beast` number, since 244 + 400 + 1 + 21 = 666.

It is not a de Polignac number, because 244400121 - 2³ = 244400113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 244400094 and 244400103.

It is not an unprimeable number, because it can be changed into a prime (244400161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24730 + ... + 33171.

Almost surely, 2^244400121 is an apocalyptic number.

244400121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

244400121 is a deficient number, since it is larger than the sum of its proper divisors (165082823).

244400121 is a wasteful number, since it uses less digits than its factorization.

244400121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57981 (or 57978 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 244400121 is about 15633.3016666346. The cubic root of 244400121 is about 625.2213581783.

Adding to 244400121 its reverse (121004442), we get a palindrome (365404563).

The spelling of 244400121 in words is "two hundred forty-four million, four hundred thousand, one hundred twenty-one".