40501221101 has 16 divisors (see below), whose sum is σ = 45283045248. Its totient is φ = 35903596800.

The previous prime is 40501221083. The next prime is 40501221121. The reversal of 40501221101 is 10112210504.

It is a cyclic number.

It is not a de Polignac number, because 40501221101 - 2⁶ = 40501221037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40501221101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40501221121) 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, 942776 + ... + 984798.

It is an arithmetic number, because the mean of its divisors is an integer number (2830190328).

Almost surely, 2^40501221101 is an apocalyptic number.

40501221101 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

40501221101 is a deficient number, since it is larger than the sum of its proper divisors (4781824147).

40501221101 is a wasteful number, since it uses less digits than its factorization.

40501221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44212.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 40501221101 its reverse (10112210504), we get a palindrome (50613431605).

The spelling of 40501221101 in words is "forty billion, five hundred one million, two hundred twenty-one thousand, one hundred one".