20011100212 has 6 divisors (see below), whose sum is σ = 35019425378. Its totient is φ = 10005550104.

The previous prime is 20011100177. The next prime is 20011100227. The reversal of 20011100212 is 21200111002.

It can be written as a sum of positive squares in only one way, i.e., 18794764836 + 1216335376 = 137094^2 + 34876^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2501387523 + ... + 2501387530.

Almost surely, 2^20011100212 is an apocalyptic number.

It is an amenable number.

20011100212 is a deficient number, since it is larger than the sum of its proper divisors (15008325166).

20011100212 is a wasteful number, since it uses less digits than its factorization.

20011100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002775057 (or 5002775055 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20011100212 its reverse (21200111002), we get a palindrome (41211211214).

The spelling of 20011100212 in words is "twenty billion, eleven million, one hundred thousand, two hundred twelve".