21022201101 has 16 divisors (see below), whose sum is σ = 30581022528. Its totient is φ = 12739363200.

The previous prime is 21022201033. The next prime is 21022201111. The reversal of 21022201101 is 10110222012.

It is not a de Polignac number, because 21022201101 - 2⁷ = 21022200973 is a prime.

It is a super-2 number, since 2×21022201101² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022201111) 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, 339775 + ... + 396851.

It is an arithmetic number, because the mean of its divisors is an integer number (1911313908).

Almost surely, 2^21022201101 is an apocalyptic number.

It is an amenable number.

21022201101 is a deficient number, since it is larger than the sum of its proper divisors (9558821427).

21022201101 is a wasteful number, since it uses less digits than its factorization.

21022201101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68252.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21022201101 its reverse (10110222012), we get a palindrome (31132423113).

The spelling of 21022201101 in words is "twenty-one billion, twenty-two million, two hundred one thousand, one hundred one".