20222220212 has 12 divisors (see below), whose sum is σ = 35410254180. Its totient is φ = 10105004736.

The previous prime is 20222220191. The next prime is 20222220217. The reversal of 20222220212 is 21202222202.

It can be written as a sum of positive squares in 2 ways, for example, as 13746155536 + 6476064676 = 117244^2 + 80474^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222220217) by changing a digit.

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, 1518887 + ... + 1532142.

It is an arithmetic number, because the mean of its divisors is an integer number (2950854515).

Almost surely, 2^20222220212 is an apocalyptic number.

It is an amenable number.

20222220212 is a deficient number, since it is larger than the sum of its proper divisors (15188033968).

20222220212 is a wasteful number, since it uses less digits than its factorization.

20222220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052690 (or 3052688 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 20222220212 its reverse (21202222202), we get a palindrome (41424442414).

The spelling of 20222220212 in words is "twenty billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twelve".