20001112121222 has 8 divisors (see below), whose sum is σ = 30699381395496. Its totient is φ = 9767984989392.

The previous prime is 20001112121191. The next prime is 20001112121239. The reversal of 20001112121222 is 22212121110002.

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

It is a super-2 number, since 2×20001112121222² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20001112121222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116285535503 + ... + 116285535674.

It is an arithmetic number, because the mean of its divisors is an integer number (3837422674437).

Almost surely, 2^{20001112121222} is an apocalyptic number.

20001112121222 is a deficient number, since it is larger than the sum of its proper divisors (10698269274274).

20001112121222 is a wasteful number, since it uses less digits than its factorization.

20001112121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232571071222.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20001112121222 its reverse (22212121110002), we get a palindrome (42213233231224).

The spelling of 20001112121222 in words is "twenty trillion, one billion, one hundred twelve million, one hundred twenty-one thousand, two hundred twenty-two".