20011200212 has 12 divisors (see below), whose sum is σ = 35030631636. Its totient is φ = 10002448320.

The previous prime is 20011200179. The next prime is 20011200217. The reversal of 20011200212 is 21200211002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11932066756 + 8079133456 = 109234^2 + 89884^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20011200193 and 20011200202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011200217) 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, 773633 + ... + 799080.

It is an arithmetic number, because the mean of its divisors is an integer number (2919219303).

Almost surely, 2^20011200212 is an apocalyptic number.

It is an amenable number.

20011200212 is a deficient number, since it is larger than the sum of its proper divisors (15019431424).

20011200212 is a wasteful number, since it uses less digits than its factorization.

20011200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575898 (or 1575896 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20011200212 its reverse (21200211002), we get a palindrome (41211411214).

The spelling of 20011200212 in words is "twenty billion, eleven million, two hundred thousand, two hundred twelve".