21211011201112 has 32 divisors (see below), whose sum is σ = 39797749591200. Its totient is φ = 10598280309504.

The previous prime is 21211011201071. The next prime is 21211011201169. The reversal of 21211011201112 is 21110211011212.

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, 74206564 + ... + 74491852.

It is an arithmetic number, because the mean of its divisors is an integer number (1243679674725).

Almost surely, 2^{21211011201112} is an apocalyptic number.

It is an amenable number.

21211011201112 is a deficient number, since it is larger than the sum of its proper divisors (18586738390088).

21211011201112 is a wasteful number, since it uses less digits than its factorization.

21211011201112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291595 (or 291591 counting only the distinct ones).

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

Adding to 21211011201112 its reverse (21110211011212), we get a palindrome (42321222212324).

The spelling of 21211011201112 in words is "twenty-one trillion, two hundred eleven billion, eleven million, two hundred one thousand, one hundred twelve".