40110403100021 has 2 divisors, whose sum is σ = 40110403100022. Its totient is φ = 40110403100020.

The previous prime is 40110403099993. The next prime is 40110403100057. The reversal of 40110403100021 is 12000130401104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36250694931025 + 3859708168996 = 6020855^2 + 1964614^2 .

It is a cyclic number.

It is not a de Polignac number, because 40110403100021 - 2²⁶ = 40110335991157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40110403100071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20055201550010 + 20055201550011.

It is an arithmetic number, because the mean of its divisors is an integer number (20055201550011).

Almost surely, 2^{40110403100021} is an apocalyptic number.

It is an amenable number.

40110403100021 is a deficient number, since it is larger than the sum of its proper divisors (1).

40110403100021 is an equidigital number, since it uses as much as digits as its factorization.

40110403100021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 40110403100021 its reverse (12000130401104), we get a palindrome (52110533501125).

The spelling of 40110403100021 in words is "forty trillion, one hundred ten billion, four hundred three million, one hundred thousand, twenty-one".