244040111221 has 16 divisors (see below), whose sum is σ = 258992173440. Its totient is φ = 229596050880.

The previous prime is 244040111207. The next prime is 244040111267. The reversal of 244040111221 is 122111040442.

It is a cyclic number.

It is not a de Polignac number, because 244040111221 - 2²¹ = 244038014069 is a prime.

It is a super-2 number, since 2×244040111221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 244040111192 and 244040111201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244040111281) 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, 455361 + ... + 833926.

It is an arithmetic number, because the mean of its divisors is an integer number (16187010840).

Almost surely, 2^244040111221 is an apocalyptic number.

It is an amenable number.

244040111221 is a deficient number, since it is larger than the sum of its proper divisors (14952062219).

244040111221 is a wasteful number, since it uses less digits than its factorization.

244040111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289484.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 244040111221 its reverse (122111040442), we get a palindrome (366151151663).

The spelling of 244040111221 in words is "two hundred forty-four billion, forty million, one hundred eleven thousand, two hundred twenty-one".