40421220110101 has 4 divisors (see below), whose sum is σ = 40421455402572. Its totient is φ = 40420984817632.

The previous prime is 40421220110093. The next prime is 40421220110129. The reversal of 40421220110101 is 10101102212404.

It is a happy number.

40421220110101 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.

It can be written as a sum of positive squares in 2 ways, for example, as 11771417902500 + 28649802207601 = 3430950^2 + 5352551^2 .

It is a cyclic number.

It is not a de Polignac number, because 40421220110101 - 2³ = 40421220110093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40421220110501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117388360 + ... + 117732193.

It is an arithmetic number, because the mean of its divisors is an integer number (10105363850643).

Almost surely, 2^{40421220110101} is an apocalyptic number.

It is an amenable number.

40421220110101 is a deficient number, since it is larger than the sum of its proper divisors (235292471).

40421220110101 is a wasteful number, since it uses less digits than its factorization.

40421220110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235292470.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 40421220110101 its reverse (10101102212404), we get a palindrome (50522322322505).

The spelling of 40421220110101 in words is "forty trillion, four hundred twenty-one billion, two hundred twenty million, one hundred ten thousand, one hundred one".