20011102012112 has 40 divisors (see below), whose sum is σ = 39922945366920. Its totient is φ = 9710935326720.

The previous prime is 20011102012091. The next prime is 20011102012147. The reversal of 20011102012112 is 21121020111002.

It can be written as a sum of positive squares in 4 ways, for example, as 2751697062976 + 17259404949136 = 1658824^2 + 4154444^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78901187 + ... + 79154402.

It is an arithmetic number, because the mean of its divisors is an integer number (998073634173).

Almost surely, 2^{20011102012112} is an apocalyptic number.

It is an amenable number.

20011102012112 is a deficient number, since it is larger than the sum of its proper divisors (19911843354808).

20011102012112 is a wasteful number, since it uses less digits than its factorization.

20011102012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158055831 (or 158055825 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20011102012112 its reverse (21121020111002), we get a palindrome (41132122123114).

The spelling of 20011102012112 in words is "twenty trillion, eleven billion, one hundred two million, twelve thousand, one hundred twelve".