21022101101 has 32 divisors (see below), whose sum is σ = 22208256000. Its totient is φ = 19883223360.

The previous prime is 21022101097. The next prime is 21022101103. The reversal of 21022101101 is 10110122012.

It is a cyclic number.

It is not a de Polignac number, because 21022101101 - 2² = 21022101097 is a prime.

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 (21022101103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50171870 + ... + 50172288.

It is an arithmetic number, because the mean of its divisors is an integer number (694008000).

Almost surely, 2^21022101101 is an apocalyptic number.

It is an amenable number.

21022101101 is a deficient number, since it is larger than the sum of its proper divisors (1186154899).

21022101101 is a wasteful number, since it uses less digits than its factorization.

21022101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809.

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

Adding to 21022101101 its reverse (10110122012), we get a palindrome (31132223113).

The spelling of 21022101101 in words is "twenty-one billion, twenty-two million, one hundred one thousand, one hundred one".