40420202220 has 36 divisors (see below), whose sum is σ = 122607947280. Its totient is φ = 10778720544.

The previous prime is 40420202209. The next prime is 40420202227. The reversal of 40420202220 is 2220202404.

40420202220 is a `hidden beast` number, since 4 + 0 + 420 + 20 + 2 + 220 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 40420202193 and 40420202202.

It is not an unprimeable number, because it can be changed into a prime (40420202227) 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, 112278160 + ... + 112278519.

Almost surely, 2^40420202220 is an apocalyptic number.

It is an amenable number.

40420202220 is an abundant number, since it is smaller than the sum of its proper divisors (82187745060).

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

40420202220 is a wasteful number, since it uses less digits than its factorization.

40420202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224556694 (or 224556689 counting only the distinct ones).

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

Adding to 40420202220 its reverse (2220202404), we get a palindrome (42640404624).

The spelling of 40420202220 in words is "forty billion, four hundred twenty million, two hundred two thousand, two hundred twenty".