40221135 has 24 divisors (see below), whose sum is σ = 72749664. Its totient is φ = 20518080.

The previous prime is 40221131. The next prime is 40221161. The reversal of 40221135 is 53112204.

It is not a de Polignac number, because 40221135 - 2² = 40221131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40221131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18396 + ... + 20465.

It is an arithmetic number, because the mean of its divisors is an integer number (3031236).

Almost surely, 2^40221135 is an apocalyptic number.

40221135 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40221135 is a deficient number, since it is larger than the sum of its proper divisors (32528529).

40221135 is a wasteful number, since it uses less digits than its factorization.

40221135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38895 (or 38892 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40221135 is about 6342.0134815372. The cubic root of 40221135 is about 342.6242573991.

Adding to 40221135 its reverse (53112204), we get a palindrome (93333339).

The spelling of 40221135 in words is "forty million, two hundred twenty-one thousand, one hundred thirty-five".