21112200011 has 8 divisors (see below), whose sum is σ = 24130044384. Its totient is φ = 18094809600.

The previous prime is 21112199981. The next prime is 21112200017. The reversal of 21112200011 is 11000221112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21112200011 - 2¹⁸ = 21111937867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21112199965 and 21112200001.

It is not an unprimeable number, because it can be changed into a prime (21112200017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7190 + ... + 205611.

It is an arithmetic number, because the mean of its divisors is an integer number (3016255548).

Almost surely, 2^21112200011 is an apocalyptic number.

21112200011 is a deficient number, since it is larger than the sum of its proper divisors (3017844373).

21112200011 is a wasteful number, since it uses less digits than its factorization.

21112200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226981.

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

Adding to 21112200011 its reverse (11000221112), we get a palindrome (32112421123).

The spelling of 21112200011 in words is "twenty-one billion, one hundred twelve million, two hundred thousand, eleven".