44420121211 has 4 divisors (see below), whose sum is σ = 44446114800. Its totient is φ = 44394127624.

The previous prime is 44420121199. The next prime is 44420121217. The reversal of 44420121211 is 11212102444.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 44420121211 - 2⁹ = 44420120699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44420121217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12994231 + ... + 12997648.

It is an arithmetic number, because the mean of its divisors is an integer number (11111528700).

Almost surely, 2^44420121211 is an apocalyptic number.

44420121211 is a deficient number, since it is larger than the sum of its proper divisors (25993589).

44420121211 is a wasteful number, since it uses less digits than its factorization.

44420121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25993588.

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

Adding to 44420121211 its reverse (11212102444), we get a palindrome (55632223655).

The spelling of 44420121211 in words is "forty-four billion, four hundred twenty million, one hundred twenty-one thousand, two hundred eleven".