21444003041011 has 16 divisors (see below), whose sum is σ = 22181027788800. Its totient is φ = 20709829483200.

The previous prime is 21444003040973. The next prime is 21444003041059. The reversal of 21444003041011 is 11014030044412.

It is a cyclic number.

It is not a de Polignac number, because 21444003041011 - 2¹⁷ = 21444002909939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21444003021011) 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, 61757400 + ... + 62103658.

It is an arithmetic number, because the mean of its divisors is an integer number (1386314236800).

Almost surely, 2^{21444003041011} is an apocalyptic number.

21444003041011 is a deficient number, since it is larger than the sum of its proper divisors (737024747789).

21444003041011 is a wasteful number, since it uses less digits than its factorization.

21444003041011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350370.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 21444003041011 its reverse (11014030044412), we get a palindrome (32458033085423).

The spelling of 21444003041011 in words is "twenty-one trillion, four hundred forty-four billion, three million, forty-one thousand, eleven".