40021111211 has 4 divisors (see below), whose sum is σ = 40021524672. Its totient is φ = 40020697752.

The previous prime is 40021111201. The next prime is 40021111213. The reversal of 40021111211 is 11211112004.

40021111211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40021111211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40021111213) 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, 25190 + ... + 284036.

It is an arithmetic number, because the mean of its divisors is an integer number (10005381168).

Almost surely, 2^40021111211 is an apocalyptic number.

40021111211 is a deficient number, since it is larger than the sum of its proper divisors (413461).

40021111211 is a wasteful number, since it uses less digits than its factorization.

40021111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413460.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 40021111211 its reverse (11211112004), we get a palindrome (51232223215).

The spelling of 40021111211 in words is "forty billion, twenty-one million, one hundred eleven thousand, two hundred eleven".