40201240221 has 32 divisors (see below), whose sum is σ = 60439818240. Its totient is φ = 26404282800.

The previous prime is 40201240201. The next prime is 40201240243. The reversal of 40201240221 is 12204210204.

40201240221 is a `hidden beast` number, since 4 + 0 + 201 + 240 + 221 = 666.

It is not a de Polignac number, because 40201240221 - 2⁹ = 40201239709 is a prime.

It is a super-2 number, since 2×40201240221² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40201240194 and 40201240203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40201240201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2951136 + ... + 2964726.

It is an arithmetic number, because the mean of its divisors is an integer number (1888744320).

Almost surely, 2^40201240221 is an apocalyptic number.

It is an amenable number.

40201240221 is a deficient number, since it is larger than the sum of its proper divisors (20238578019).

40201240221 is a wasteful number, since it uses less digits than its factorization.

40201240221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15214 (or 15208 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 40201240221 its reverse (12204210204), we get a palindrome (52405450425).

The spelling of 40201240221 in words is "forty billion, two hundred one million, two hundred forty thousand, two hundred twenty-one".