21222110201011 has 4 divisors (see below), whose sum is σ = 21257539434000. Its totient is φ = 21186680968024.

The previous prime is 21222110200931. The next prime is 21222110201021. The reversal of 21222110201011 is 11010201122212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21222110201011 is a prime.

It is a super-2 number, since 2×21222110201011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222110201021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17714615596 + ... + 17714616793.

It is an arithmetic number, because the mean of its divisors is an integer number (5314384858500).

Almost surely, 2^{21222110201011} is an apocalyptic number.

21222110201011 is a deficient number, since it is larger than the sum of its proper divisors (35429232989).

21222110201011 is an equidigital number, since it uses as much as digits as its factorization.

21222110201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35429232988.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21222110201011 its reverse (11010201122212), we get a palindrome (32232311323223).

The spelling of 21222110201011 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred ten million, two hundred one thousand, eleven".