40211221121 has 8 divisors (see below), whose sum is σ = 42863395200. Its totient is φ = 37612626480.

The previous prime is 40211221091. The next prime is 40211221163. The reversal of 40211221121 is 12112211204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40211221121 - 2²² = 40207026817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40211221121.

It is not an unprimeable number, because it can be changed into a prime (40211221181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13393310 + ... + 13396311.

It is an arithmetic number, because the mean of its divisors is an integer number (5357924400).

Almost surely, 2^40211221121 is an apocalyptic number.

It is an amenable number.

40211221121 is a deficient number, since it is larger than the sum of its proper divisors (2652174079).

40211221121 is a wasteful number, since it uses less digits than its factorization.

40211221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26789719.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 40211221121 its reverse (12112211204), we get a palindrome (52323432325).

The spelling of 40211221121 in words is "forty billion, two hundred eleven million, two hundred twenty-one thousand, one hundred twenty-one".