20010001021112 has 32 divisors (see below), whose sum is σ = 37549082027520. Its totient is φ = 9996914665440.

The previous prime is 20010001021111. The next prime is 20010001021163. The reversal of 20010001021112 is 21112010001002.

It is a junction number, because it is equal to n+sod(n) for n = 20010001021093 and 20010001021102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010001021111) 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, 75221123 + ... + 75486669.

It is an arithmetic number, because the mean of its divisors is an integer number (1173408813360).

Almost surely, 2^{20010001021112} is an apocalyptic number.

It is an amenable number.

20010001021112 is a deficient number, since it is larger than the sum of its proper divisors (17539081006408).

20010001021112 is a wasteful number, since it uses less digits than its factorization.

20010001021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273131 (or 273127 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20010001021112 its reverse (21112010001002), we get a palindrome (41122011022114).

The spelling of 20010001021112 in words is "twenty trillion, ten billion, one million, twenty-one thousand, one hundred twelve".