40400110403221 has 2 divisors, whose sum is σ = 40400110403222. Its totient is φ = 40400110403220.

The previous prime is 40400110403203. The next prime is 40400110403239. The reversal of 40400110403221 is 12230401100404.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (40400110403203) and next prime (40400110403239).

It can be written as a sum of positive squares in only one way, i.e., 31453365388900 + 8946745014321 = 5608330^2 + 2991111^2 .

It is a cyclic number.

It is not a de Polignac number, because 40400110403221 - 2⁴⁵ = 5215738314389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40400110403192 and 40400110403201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40400110407221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20200055201610 + 20200055201611.

It is an arithmetic number, because the mean of its divisors is an integer number (20200055201611).

Almost surely, 2^{40400110403221} is an apocalyptic number.

It is an amenable number.

40400110403221 is a deficient number, since it is larger than the sum of its proper divisors (1).

40400110403221 is an equidigital number, since it uses as much as digits as its factorization.

40400110403221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 40400110403221 its reverse (12230401100404), we get a palindrome (52630511503625).

The spelling of 40400110403221 in words is "forty trillion, four hundred billion, one hundred ten million, four hundred three thousand, two hundred twenty-one".