20202222202220 has 12 divisors (see below), whose sum is σ = 42424666624704. Its totient is φ = 8080888880880.

The previous prime is 20202222202207. The next prime is 20202222202243. The reversal of 20202222202220 is 2220222220202.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1010111110111 = 20202222202220 / (2 + 0 + 2 + 0 + 2 + 2 + 2 + 2 + 2 + 0 + 2 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 20202222202192 and 20202222202201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505055555036 + ... + 505055555075.

It is an arithmetic number, because the mean of its divisors is an integer number (3535388885392).

Almost surely, 2^{20202222202220} is an apocalyptic number.

20202222202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202222202220 is an abundant number, since it is smaller than the sum of its proper divisors (22222444422484).

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

20202222202220 is a wasteful number, since it uses less digits than its factorization.

20202222202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010111110120 (or 1010111110118 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20202222202220 its reverse (2220222220202), we get a palindrome (22422444422422).

The spelling of 20202222202220 in words is "twenty trillion, two hundred two billion, two hundred twenty-two million, two hundred two thousand, two hundred twenty".