20001232112 has 20 divisors (see below), whose sum is σ = 38847149040. Its totient is φ = 9976161408.

The previous prime is 20001232103. The next prime is 20001232123. The reversal of 20001232112 is 21123210002.

It is a happy number.

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, 1521668 + ... + 1534755.

It is an arithmetic number, because the mean of its divisors is an integer number (1942357452).

Almost surely, 2^20001232112 is an apocalyptic number.

It is an amenable number.

20001232112 is a deficient number, since it is larger than the sum of its proper divisors (18845916928).

20001232112 is a wasteful number, since it uses less digits than its factorization.

20001232112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3056840 (or 3056834 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20001232112 its reverse (21123210002), we get a palindrome (41124442114).

The spelling of 20001232112 in words is "twenty billion, one million, two hundred thirty-two thousand, one hundred twelve".