20001122222222 has 8 divisors (see below), whose sum is σ = 30001752875016. Its totient is φ = 10000537930552.

The previous prime is 20001122222197. The next prime is 20001122222251. The reversal of 20001122222222 is 22222222110002.

It is a sphenic number, since it is the product of 3 distinct primes.

20001122222222 is a modest number, since divided by 2222222 gives 2000112 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 20001122222194 and 20001122222203.

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 3 ways as a sum of consecutive naturals, for example, 10490873 + ... + 12249924.

It is an arithmetic number, because the mean of its divisors is an integer number (3750219109377).

Almost surely, 2^{20001122222222} is an apocalyptic number.

20001122222222 is a deficient number, since it is larger than the sum of its proper divisors (10000630652794).

20001122222222 is a wasteful number, since it uses less digits than its factorization.

20001122222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23180562.

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

Adding to 20001122222222 its reverse (22222222110002), we get a palindrome (42223344332224).

The spelling of 20001122222222 in words is "twenty trillion, one billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-two".