20202202220 has 24 divisors (see below), whose sum is σ = 42506075808. Its totient is φ = 8065366400.

The previous prime is 20202202217. The next prime is 20202202247. The reversal of 20202202220 is 2220220202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20202202195 and 20202202204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 958976 + ... + 979815.

It is an arithmetic number, because the mean of its divisors is an integer number (1771086492).

Almost surely, 2^20202202220 is an apocalyptic number.

20202202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202202220 is an abundant number, since it is smaller than the sum of its proper divisors (22303873588).

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

20202202220 is a wasteful number, since it uses less digits than its factorization.

20202202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939321 (or 1939319 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 20202202220 its reverse (2220220202), we get a palindrome (22422422422).

The spelling of 20202202220 in words is "twenty billion, two hundred two million, two hundred two thousand, two hundred twenty".