20012011112 has 16 divisors (see below), whose sum is σ = 38437704900. Its totient is φ = 9761956480.

The previous prime is 20012011109. The next prime is 20012011127. The reversal of 20012011112 is 21111021002.

It can be written as a sum of positive squares in 2 ways, for example, as 19834215556 + 177795556 = 140834^2 + 13334^2 .

It is a super-2 number, since 2×20012011112² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20012011093 and 20012011102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30505787 + ... + 30506442.

Almost surely, 2^20012011112 is an apocalyptic number.

It is an amenable number.

20012011112 is a deficient number, since it is larger than the sum of its proper divisors (18425693788).

20012011112 is a wasteful number, since it uses less digits than its factorization.

20012011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61012276 (or 61012272 counting only the distinct ones).

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

Adding to 20012011112 its reverse (21111021002), we get a palindrome (41123032114).

The spelling of 20012011112 in words is "twenty billion, twelve million, eleven thousand, one hundred twelve".