20111132212 has 12 divisors (see below), whose sum is σ = 35771440516. Its totient is φ = 9890720640.

The previous prime is 20111132201. The next prime is 20111132213. The reversal of 20111132212 is 21223111102.

It can be written as a sum of positive squares in 2 ways, for example, as 802362276 + 19308769936 = 28326^2 + 138956^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111132213) 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, 41211093 + ... + 41211580.

Almost surely, 2^20111132212 is an apocalyptic number.

It is an amenable number.

20111132212 is a deficient number, since it is larger than the sum of its proper divisors (15660308304).

20111132212 is a wasteful number, since it uses less digits than its factorization.

20111132212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82422738 (or 82422736 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20111132212 its reverse (21223111102), we get a palindrome (41334243314).

The spelling of 20111132212 in words is "twenty billion, one hundred eleven million, one hundred thirty-two thousand, two hundred twelve".