21022122201101 has 16 divisors (see below), whose sum is σ = 24100759463040. Its totient is φ = 17962372753920.

The previous prime is 21022122201097. The next prime is 21022122201107. The reversal of 21022122201101 is 10110222122012.

It is not a de Polignac number, because 21022122201101 - 2² = 21022122201097 is a prime.

It is a super-2 number, since 2×21022122201101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21022122201101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022122201107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12861641 + ... + 14403681.

It is an arithmetic number, because the mean of its divisors is an integer number (1506297466440).

Almost surely, 2^{21022122201101} is an apocalyptic number.

It is an amenable number.

21022122201101 is a deficient number, since it is larger than the sum of its proper divisors (3078637261939).

21022122201101 is a wasteful number, since it uses less digits than its factorization.

21022122201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548164.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21022122201101 its reverse (10110222122012), we get a palindrome (31132344323113).

The spelling of 21022122201101 in words is "twenty-one trillion, twenty-two billion, one hundred twenty-two million, two hundred one thousand, one hundred one".