20221231200122 has 4 divisors (see below), whose sum is σ = 30331846800186. Its totient is φ = 10110615600060.

The previous prime is 20221231200073. The next prime is 20221231200151. The reversal of 20221231200122 is 22100213212202.

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

It can be written as a sum of positive squares in only one way, i.e., 13794605663881 + 6426625536241 = 3714109^2 + 2535079^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20221231200094 and 20221231200103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055307800029 + ... + 5055307800032.

Almost surely, 2^{20221231200122} is an apocalyptic number.

20221231200122 is a deficient number, since it is larger than the sum of its proper divisors (10110615600064).

20221231200122 is a wasteful number, since it uses less digits than its factorization.

20221231200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110615600063.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20221231200122 its reverse (22100213212202), we get a palindrome (42321444412324).

The spelling of 20221231200122 in words is "twenty trillion, two hundred twenty-one billion, two hundred thirty-one million, two hundred thousand, one hundred twenty-two".