40211435021 has 2 divisors, whose sum is σ = 40211435022. Its totient is φ = 40211435020.

The previous prime is 40211434997. The next prime is 40211435039. The reversal of 40211435021 is 12053411204.

40211435021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30621150121 + 9590284900 = 174989^2 + 97930^2 .

It is a cyclic number.

It is not a de Polignac number, because 40211435021 - 2³⁰ = 39137693197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40211435051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20105717510 + 20105717511.

It is an arithmetic number, because the mean of its divisors is an integer number (20105717511).

Almost surely, 2^40211435021 is an apocalyptic number.

It is an amenable number.

40211435021 is a deficient number, since it is larger than the sum of its proper divisors (1).

40211435021 is an equidigital number, since it uses as much as digits as its factorization.

40211435021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 40211435021 its reverse (12053411204), we get a palindrome (52264846225).

The spelling of 40211435021 in words is "forty billion, two hundred eleven million, four hundred thirty-five thousand, twenty-one".