20011100211112 has 64 divisors (see below), whose sum is σ = 37835138880000. Its totient is φ = 9922059111360.

The previous prime is 20011100211071. The next prime is 20011100211131. The reversal of 20011100211112 is 21111200111002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20011100211092 and 20011100211101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2135423787 + ... + 2135433157.

It is an arithmetic number, because the mean of its divisors is an integer number (591174045000).

Almost surely, 2^{20011100211112} is an apocalyptic number.

It is an amenable number.

20011100211112 is a deficient number, since it is larger than the sum of its proper divisors (17824038668888).

20011100211112 is a wasteful number, since it uses less digits than its factorization.

20011100211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13534 (or 13530 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20011100211112 its reverse (21111200111002), we get a palindrome (41122300322114).

The spelling of 20011100211112 in words is "twenty trillion, eleven billion, one hundred million, two hundred eleven thousand, one hundred twelve".