20422100212 has 24 divisors (see below), whose sum is σ = 36107051400. Its totient is φ = 10105881600.

The previous prime is 20422100191. The next prime is 20422100219. The reversal of 20422100212 is 21200122402.

It can be written as a sum of positive squares in 4 ways, for example, as 10906878096 + 9515222116 = 104436^2 + 97546^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20422100219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1161664 + ... + 1179112.

It is an arithmetic number, because the mean of its divisors is an integer number (1504460475).

Almost surely, 2^20422100212 is an apocalyptic number.

It is an amenable number.

20422100212 is a deficient number, since it is larger than the sum of its proper divisors (15684951188).

20422100212 is a wasteful number, since it uses less digits than its factorization.

20422100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20451 (or 20449 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20422100212 its reverse (21200122402), we get a palindrome (41622222614).

The spelling of 20422100212 in words is "twenty billion, four hundred twenty-two million, one hundred thousand, two hundred twelve".