20120121200222 has 64 divisors (see below), whose sum is σ = 31337428953600. Its totient is φ = 9682566574464.

The previous prime is 20120121200147. The next prime is 20120121200323. The reversal of 20120121200222 is 22200212102102.

It is a happy number.

It is a super-2 number, since 2×20120121200222² (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 20120121200222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 867122873 + ... + 867146075.

It is an arithmetic number, because the mean of its divisors is an integer number (489647327400).

Almost surely, 2^{20120121200222} is an apocalyptic number.

20120121200222 is a deficient number, since it is larger than the sum of its proper divisors (11217307753378).

20120121200222 is a wasteful number, since it uses less digits than its factorization.

20120121200222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23937.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20120121200222 its reverse (22200212102102), we get a palindrome (42320333302324).

The spelling of 20120121200222 in words is "twenty trillion, one hundred twenty billion, one hundred twenty-one million, two hundred thousand, two hundred twenty-two".