20001120211222 has 4 divisors (see below), whose sum is σ = 30001680316836. Its totient is φ = 10000560105610.

The previous prime is 20001120211211. The next prime is 20001120211243. The reversal of 20001120211222 is 22211202110002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20001120211196 and 20001120211205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000280052804 + ... + 5000280052807.

It is an arithmetic number, because the mean of its divisors is an integer number (7500420079209).

Almost surely, 2^{20001120211222} is an apocalyptic number.

20001120211222 is a deficient number, since it is larger than the sum of its proper divisors (10000560105614).

20001120211222 is a wasteful number, since it uses less digits than its factorization.

20001120211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000560105613.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20001120211222 its reverse (22211202110002), we get a palindrome (42212322321224).

The spelling of 20001120211222 in words is "twenty trillion, one billion, one hundred twenty million, two hundred eleven thousand, two hundred twenty-two".