21022110101 has 8 divisors (see below), whose sum is σ = 21937675200. Its totient is φ = 20106675072.

The previous prime is 21022110091. The next prime is 21022110107. The reversal of 21022110101 is 10101122012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21022110101 - 2²⁶ = 20955001237 is a prime.

It is a super-2 number, since 2×21022110101² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022110107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450725 + ... + 495173.

It is an arithmetic number, because the mean of its divisors is an integer number (2742209400).

Almost surely, 2^21022110101 is an apocalyptic number.

It is an amenable number.

21022110101 is a deficient number, since it is larger than the sum of its proper divisors (915565099).

21022110101 is a wasteful number, since it uses less digits than its factorization.

21022110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65035.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21022110101 its reverse (10101122012), we get a palindrome (31123232113).

The spelling of 21022110101 in words is "twenty-one billion, twenty-two million, one hundred ten thousand, one hundred one".