20012221202222 has 16 divisors (see below), whose sum is σ = 30073455613152. Its totient is φ = 9987737469600.

The previous prime is 20012221202213. The next prime is 20012221202269. The reversal of 20012221202222 is 22220212221002.

It is a junction number, because it is equal to n+sod(n) for n = 20012221202194 and 20012221202203.

It is a congruent number.

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, 27830303 + ... + 28540325.

It is an arithmetic number, because the mean of its divisors is an integer number (1879590975822).

Almost surely, 2^{20012221202222} is an apocalyptic number.

20012221202222 is a deficient number, since it is larger than the sum of its proper divisors (10061234410930).

20012221202222 is a wasteful number, since it uses less digits than its factorization.

20012221202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735883.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20012221202222 its reverse (22220212221002), we get a palindrome (42232433423224).

The spelling of 20012221202222 in words is "twenty trillion, twelve billion, two hundred twenty-one million, two hundred two thousand, two hundred twenty-two".