21022100011011 has 32 divisors (see below), whose sum is σ = 32190423598080. Its totient is φ = 12068801690400.

The previous prime is 21022100011009. The next prime is 21022100011019. The reversal of 21022100011011 is 11011000122012.

It is not a de Polignac number, because 21022100011011 - 2¹ = 21022100011009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21022100011019) 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, 4014556 + ... + 7626326.

It is an arithmetic number, because the mean of its divisors is an integer number (1005950737440).

Almost surely, 2^{21022100011011} is an apocalyptic number.

21022100011011 is a deficient number, since it is larger than the sum of its proper divisors (11168323587069).

21022100011011 is a wasteful number, since it uses less digits than its factorization.

21022100011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621087.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21022100011011 its reverse (11011000122012), we get a palindrome (32033100133023).

The spelling of 21022100011011 in words is "twenty-one trillion, twenty-two billion, one hundred million, eleven thousand, eleven".