40124021611111 has 2 divisors, whose sum is σ = 40124021611112. Its totient is φ = 40124021611110.

The previous prime is 40124021611099. The next prime is 40124021611139. The reversal of 40124021611111 is 11111612042104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40124021611111 is a prime.

It is a super-2 number, since 2×40124021611111² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40124021621111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20062010805555 + 20062010805556.

It is an arithmetic number, because the mean of its divisors is an integer number (20062010805556).

Almost surely, 2^{40124021611111} is an apocalyptic number.

40124021611111 is a deficient number, since it is larger than the sum of its proper divisors (1).

40124021611111 is an equidigital number, since it uses as much as digits as its factorization.

40124021611111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 25.

Adding to 40124021611111 its reverse (11111612042104), we get a palindrome (51235633653215).

The spelling of 40124021611111 in words is "forty trillion, one hundred twenty-four billion, twenty-one million, six hundred eleven thousand, one hundred eleven".