20001255112 has 32 divisors (see below), whose sum is σ = 37706457600. Its totient is φ = 9946292544.

The previous prime is 20001255061. The next prime is 20001255119. The reversal of 20001255112 is 21155210002.

It is a super-2 number, since 2×20001255112² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20001255112.

It is not an unprimeable number, because it can be changed into a prime (20001255119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1936153 + ... + 1946455.

It is an arithmetic number, because the mean of its divisors is an integer number (1178326800).

Almost surely, 2^20001255112 is an apocalyptic number.

It is an amenable number.

20001255112 is a deficient number, since it is larger than the sum of its proper divisors (17705202488).

20001255112 is a wasteful number, since it uses less digits than its factorization.

20001255112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11605 (or 11601 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 20001255112 its reverse (21155210002), we get a palindrome (41156465114).

The spelling of 20001255112 in words is "twenty billion, one million, two hundred fifty-five thousand, one hundred twelve".