20011222022212 has 12 divisors (see below), whose sum is σ = 35021741053180. Its totient is φ = 10005010292736.

The previous prime is 20011222022173. The next prime is 20011222022219. The reversal of 20011222022212 is 21222022211002.

It can be written as a sum of positive squares in 2 ways, for example, as 18364173198336 + 1647048823876 = 4285344^2 + 1283374^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20011222022212.

It is not an unprimeable number, because it can be changed into a prime (20011222022219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150104637 + ... + 150237892.

Almost surely, 2^{20011222022212} is an apocalyptic number.

It is an amenable number.

20011222022212 is a deficient number, since it is larger than the sum of its proper divisors (15010519030968).

20011222022212 is a wasteful number, since it uses less digits than its factorization.

20011222022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300359190 (or 300359188 counting only the distinct ones).

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

Adding to 20011222022212 its reverse (21222022211002), we get a palindrome (41233244233214).

The spelling of 20011222022212 in words is "twenty trillion, eleven billion, two hundred twenty-two million, twenty-two thousand, two hundred twelve".