21110120012211 has 8 divisors (see below), whose sum is σ = 28395913645200. Its totient is φ = 13948869860352.

The previous prime is 21110120012203. The next prime is 21110120012251. The reversal of 21110120012211 is 11221002101112.

It is a happy number.

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

It is not a de Polignac number, because 21110120012211 - 2³ = 21110120012203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21110120012251) 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, 31135869886 + ... + 31135870563.

It is an arithmetic number, because the mean of its divisors is an integer number (3549489205650).

Almost surely, 2^{21110120012211} is an apocalyptic number.

21110120012211 is a deficient number, since it is larger than the sum of its proper divisors (7285793632989).

21110120012211 is a wasteful number, since it uses less digits than its factorization.

21110120012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62271740565.

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

Adding to 21110120012211 its reverse (11221002101112), we get a palindrome (32331122113323).

The spelling of 21110120012211 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty million, twelve thousand, two hundred eleven".