20222121200212 has 12 divisors (see below), whose sum is σ = 35520268652820. Its totient is φ = 10073473013696.

The previous prime is 20222121200191. The next prime is 20222121200233. The reversal of 20222121200212 is 21200212122202.

It is an interprime number because it is at equal distance from previous prime (20222121200191) and next prime (20222121200233).

It can be written as a sum of positive squares in 2 ways, for example, as 7502099088016 + 12720022112196 = 2738996^2 + 3566514^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20222121200212.

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, 9396895393 + ... + 9396897544.

It is an arithmetic number, because the mean of its divisors is an integer number (2960022387735).

Almost surely, 2^{20222121200212} is an apocalyptic number.

It is an amenable number.

20222121200212 is a deficient number, since it is larger than the sum of its proper divisors (15298147452608).

20222121200212 is a wasteful number, since it uses less digits than its factorization.

20222121200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18793793210 (or 18793793208 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20222121200212 its reverse (21200212122202), we get a palindrome (41422333322414).

The spelling of 20222121200212 in words is "twenty trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred thousand, two hundred twelve".