44004452121 has 40 divisors (see below), whose sum is σ = 76357396544. Its totient is φ = 24733162080.

The previous prime is 44004452119. The next prime is 44004452131. The reversal of 44004452121 is 12125440044.

44004452121 is a `hidden beast` number, since 4 + 4 + 0 + 0 + 445 + 212 + 1 = 666.

It is not a de Polignac number, because 44004452121 - 2¹ = 44004452119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44004452131) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 601555 + ... + 670728.

Almost surely, 2^44004452121 is an apocalyptic number.

It is an amenable number.

44004452121 is a deficient number, since it is larger than the sum of its proper divisors (32352944423).

44004452121 is a wasteful number, since it uses less digits than its factorization.

44004452121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272363 (or 1272354 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 44004452121 its reverse (12125440044), we get a palindrome (56129892165).

The spelling of 44004452121 in words is "forty-four billion, four million, four hundred fifty-two thousand, one hundred twenty-one".