21112012200111 has 32 divisors (see below), whose sum is σ = 32831515968000. Its totient is φ = 12062431825920.

The previous prime is 21112012200109. The next prime is 21112012200151. The reversal of 21112012200111 is 11100221021112.

It is a happy number.

It is not a de Polignac number, because 21112012200111 - 2¹ = 21112012200109 is a prime.

It is a super-3 number, since 3×21112012200111³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112012200151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6568180 + ... + 9239318.

It is an arithmetic number, because the mean of its divisors is an integer number (1025984874000).

Almost surely, 2^{21112012200111} is an apocalyptic number.

21112012200111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21112012200111 is a deficient number, since it is larger than the sum of its proper divisors (11719503767889).

21112012200111 is an equidigital number, since it uses as much as digits as its factorization.

21112012200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678844 (or 2678830 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21112012200111 its reverse (11100221021112), we get a palindrome (32212233221223).

The spelling of 21112012200111 in words is "twenty-one trillion, one hundred twelve billion, twelve million, two hundred thousand, one hundred eleven".