40041220001 has 4 divisors (see below), whose sum is σ = 40796714772. Its totient is φ = 39285725232.

The previous prime is 40041219991. The next prime is 40041220013. The reversal of 40041220001 is 10002214004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36357336976 + 3683883025 = 190676^2 + 60695^2 .

It is a cyclic number.

It is not a de Polignac number, because 40041220001 - 2⁶ = 40041219937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40041220031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377747306 + ... + 377747411.

It is an arithmetic number, because the mean of its divisors is an integer number (10199178693).

Almost surely, 2^40041220001 is an apocalyptic number.

It is an amenable number.

40041220001 is a deficient number, since it is larger than the sum of its proper divisors (755494771).

40041220001 is an equidigital number, since it uses as much as digits as its factorization.

40041220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755494770.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 40041220001 its reverse (10002214004), we get a palindrome (50043434005).

The spelling of 40041220001 in words is "forty billion, forty-one million, two hundred twenty thousand, one".