21022201111011 has 32 divisors (see below), whose sum is σ = 29296963491840. Its totient is φ = 13383152640000.

The previous prime is 21022201110991. The next prime is 21022201111049. The reversal of 21022201111011 is 11011110222012.

It is a happy number.

It is not a de Polignac number, because 21022201111011 - 2¹⁷ = 21022200979939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21022201111091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 575002950 + ... + 575039508.

It is an arithmetic number, because the mean of its divisors is an integer number (915530109120).

Almost surely, 2^{21022201111011} is an apocalyptic number.

21022201111011 is a deficient number, since it is larger than the sum of its proper divisors (8274762380829).

21022201111011 is a wasteful number, since it uses less digits than its factorization.

21022201111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50227.

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

Adding to 21022201111011 its reverse (11011110222012), we get a palindrome (32033311333023).

The spelling of 21022201111011 in words is "twenty-one trillion, twenty-two billion, two hundred one million, one hundred eleven thousand, eleven".