20001012222 has 16 divisors (see below), whose sum is σ = 40178247552. Its totient is φ = 6637633560.

The previous prime is 20001012209. The next prime is 20001012277. The reversal of 20001012222 is 22221010002.

It is a junction number, because it is equal to n+sod(n) for n = 20001012198 and 20001012207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7341154 + ... + 7343877.

It is an arithmetic number, because the mean of its divisors is an integer number (2511140472).

Almost surely, 2^20001012222 is an apocalyptic number.

20001012222 is an abundant number, since it is smaller than the sum of its proper divisors (20177235330).

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

20001012222 is a wasteful number, since it uses less digits than its factorization.

20001012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14685263.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20001012222 its reverse (22221010002), we get a palindrome (42222022224).

The spelling of 20001012222 in words is "twenty billion, one million, twelve thousand, two hundred twenty-two".