40121021411 has 4 divisors (see below), whose sum is σ = 42481081512. Its totient is φ = 37760961312.

The previous prime is 40121021341. The next prime is 40121021441. The reversal of 40121021411 is 11412012104.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40121021411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 2360060083 = 40121021411 / (4 + 0 + 1 + 2 + 1 + 0 + 2 + 1 + 4 + 1 + 1).

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 40121021411.

It is not an unprimeable number, because it can be changed into a prime (40121021441) 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, 1180030025 + ... + 1180030058.

It is an arithmetic number, because the mean of its divisors is an integer number (10620270378).

Almost surely, 2^40121021411 is an apocalyptic number.

40121021411 is a deficient number, since it is larger than the sum of its proper divisors (2360060101).

40121021411 is a wasteful number, since it uses less digits than its factorization.

40121021411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360060100.

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

Adding to 40121021411 its reverse (11412012104), we get a palindrome (51533033515).

The spelling of 40121021411 in words is "forty billion, one hundred twenty-one million, twenty-one thousand, four hundred eleven".