20221122212 has 12 divisors (see below), whose sum is σ = 35439549516. Its totient is φ = 10095536640.

The previous prime is 20221122211. The next prime is 20221122239. The reversal of 20221122212 is 21222112202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7493672356 + 12727449856 = 86566^2 + 112816^2 .

It is not an unprimeable number, because it can be changed into a prime (20221122211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3753089 + ... + 3758472.

It is an arithmetic number, because the mean of its divisors is an integer number (2953295793).

Almost surely, 2^20221122212 is an apocalyptic number.

It is an amenable number.

20221122212 is a deficient number, since it is larger than the sum of its proper divisors (15218427304).

20221122212 is a wasteful number, since it uses less digits than its factorization.

20221122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7512238 (or 7512236 counting only the distinct ones).

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

Adding to 20221122212 its reverse (21222112202), we get a palindrome (41443234414).

The spelling of 20221122212 in words is "twenty billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twelve".