20001244112 has 20 divisors (see below), whose sum is σ = 38754935076. Its totient is φ = 9999970560.

The previous prime is 20001244111. The next prime is 20001244127. The reversal of 20001244112 is 21144210002.

It can be written as a sum of positive squares in 2 ways, for example, as 6720064576 + 13281179536 = 81976^2 + 115244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001244111) 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, 297878 + ... + 358794.

Almost surely, 2^20001244112 is an apocalyptic number.

It is an amenable number.

20001244112 is a deficient number, since it is larger than the sum of its proper divisors (18753690964).

20001244112 is a wasteful number, since it uses less digits than its factorization.

20001244112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81446 (or 81440 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20001244112 its reverse (21144210002), we get a palindrome (41145454114).

The spelling of 20001244112 in words is "twenty billion, one million, two hundred forty-four thousand, one hundred twelve".