440022121 has 32 divisors (see below), whose sum is σ = 581253120. Its totient is φ = 322704000.

The previous prime is 440022119. The next prime is 440022151. The reversal of 440022121 is 121220044.

It is a cyclic number.

It is not a de Polignac number, because 440022121 - 2¹ = 440022119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 440022095 and 440022104.

It is not an unprimeable number, because it can be changed into a prime (440022151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243421 + ... + 245221.

It is an arithmetic number, because the mean of its divisors is an integer number (18164160).

Almost surely, 2^440022121 is an apocalyptic number.

It is an amenable number.

440022121 is a deficient number, since it is larger than the sum of its proper divisors (141230999).

440022121 is a wasteful number, since it uses less digits than its factorization.

440022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 440022121 is about 20976.7042454243. The cubic root of 440022121 is about 760.6032381677.

Adding to 440022121 its reverse (121220044), we get a palindrome (561242165).

The spelling of 440022121 in words is "four hundred forty million, twenty-two thousand, one hundred twenty-one".