40442121011 has 16 divisors (see below), whose sum is σ = 41615402400. Its totient is φ = 39285442560.

The previous prime is 40442121007. The next prime is 40442121017. The reversal of 40442121011 is 11012124404.

40442121011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40442121011 - 2² = 40442121007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40442121017) 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, 3110921 + ... + 3123893.

It is an arithmetic number, because the mean of its divisors is an integer number (2600962650).

Almost surely, 2^40442121011 is an apocalyptic number.

40442121011 is a deficient number, since it is larger than the sum of its proper divisors (1173281389).

40442121011 is a wasteful number, since it uses less digits than its factorization.

40442121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13606.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 40442121011 its reverse (11012124404), we get a palindrome (51454245415).

The spelling of 40442121011 in words is "forty billion, four hundred forty-two million, one hundred twenty-one thousand, eleven".