21011201110 has 64 divisors (see below), whose sum is σ = 40460083200. Its totient is φ = 7832764800.

The previous prime is 21011201093. The next prime is 21011201149. The reversal of 21011201110 is 1110211012.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7296651 + ... + 7299529.

It is an arithmetic number, because the mean of its divisors is an integer number (632188800).

Almost surely, 2^21011201110 is an apocalyptic number.

21011201110 is a deficient number, since it is larger than the sum of its proper divisors (19448882090).

21011201110 is a wasteful number, since it uses less digits than its factorization.

21011201110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21011201110 its reverse (1110211012), we get a palindrome (22121412122).

The spelling of 21011201110 in words is "twenty-one billion, eleven million, two hundred one thousand, one hundred ten".