20111232112 has 20 divisors (see below), whose sum is σ = 39033770776. Its totient is φ = 10038000960.

The previous prime is 20111232091. The next prime is 20111232149. The reversal of 20111232112 is 21123211102.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1091523 + ... + 1109794.

Almost surely, 2^20111232112 is an apocalyptic number.

It is an amenable number.

20111232112 is a deficient number, since it is larger than the sum of its proper divisors (18922538664).

20111232112 is a wasteful number, since it uses less digits than its factorization.

20111232112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201896 (or 2201890 counting only the distinct ones).

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

Adding to 20111232112 its reverse (21123211102), we get a palindrome (41234443214).

The spelling of 20111232112 in words is "twenty billion, one hundred eleven million, two hundred thirty-two thousand, one hundred twelve".