20001120222 has 32 divisors (see below), whose sum is σ = 42114844800. Its totient is φ = 6315059808.

The previous prime is 20001120197. The next prime is 20001120253. The reversal of 20001120222 is 22202110002.

It is a junction number, because it is equal to n+sod(n) for n = 20001120198 and 20001120207.

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 15 ways as a sum of consecutive naturals, for example, 890304 + ... + 912492.

It is an arithmetic number, because the mean of its divisors is an integer number (1316088900).

Almost surely, 2^20001120222 is an apocalyptic number.

20001120222 is an abundant number, since it is smaller than the sum of its proper divisors (22113724578).

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

20001120222 is a wasteful number, since it uses less digits than its factorization.

20001120222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30120.

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

Adding to 20001120222 its reverse (22202110002), we get a palindrome (42203230224).

The spelling of 20001120222 in words is "twenty billion, one million, one hundred twenty thousand, two hundred twenty-two".