20040240222 has 24 divisors (see below), whose sum is σ = 44821183680. Its totient is φ = 6464593440.

The previous prime is 20040240211. The next prime is 20040240229. The reversal of 20040240222 is 22204204002.

20040240222 is a `hidden beast` number, since 2 + 0 + 0 + 402 + 40 + 222 = 666.

It is a super-2 number, since 2×20040240222² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20040240195 and 20040240204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040240229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17956647 + ... + 17957762.

It is an arithmetic number, because the mean of its divisors is an integer number (1867549320).

Almost surely, 2^20040240222 is an apocalyptic number.

20040240222 is an abundant number, since it is smaller than the sum of its proper divisors (24780943458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20040240222 is a wasteful number, since it uses less digits than its factorization.

20040240222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35914448 (or 35914445 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 20040240222 its reverse (22204204002), we get a palindrome (42244444224).

The spelling of 20040240222 in words is "twenty billion, forty million, two hundred forty thousand, two hundred twenty-two".