21011122120112 has 10 divisors (see below), whose sum is σ = 40709049107748. Its totient is φ = 10505561060048.

The previous prime is 21011122120111. The next prime is 21011122120127. The reversal of 21011122120112 is 21102122111012.

It is not an unprimeable number, because it can be changed into a prime (21011122120111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656597566238 + ... + 656597566269.

Almost surely, 2^{21011122120112} is an apocalyptic number.

It is an amenable number.

21011122120112 is a deficient number, since it is larger than the sum of its proper divisors (19697926987636).

21011122120112 is a wasteful number, since it uses less digits than its factorization.

21011122120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313195132515 (or 1313195132509 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21011122120112 its reverse (21102122111012), we get a palindrome (42113244231124).

It can be divided in two parts, 2101112 and 2120112, that added together give a palindrome (4221224).

The spelling of 21011122120112 in words is "twenty-one trillion, eleven billion, one hundred twenty-two million, one hundred twenty thousand, one hundred twelve".