21222022101 has 16 divisors (see below), whose sum is σ = 32671707264. Its totient is φ = 12001849344.

The previous prime is 21222022093. The next prime is 21222022123. The reversal of 21222022101 is 10122022212.

It is not a de Polignac number, because 21222022101 - 2³ = 21222022093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222062101) 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, 5207100 + ... + 5211173.

It is an arithmetic number, because the mean of its divisors is an integer number (2041981704).

Almost surely, 2^21222022101 is an apocalyptic number.

21222022101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21222022101 is a deficient number, since it is larger than the sum of its proper divisors (11449685163).

21222022101 is a wasteful number, since it uses less digits than its factorization.

21222022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10418380.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21222022101 its reverse (10122022212), we get a palindrome (31344044313).

The spelling of 21222022101 in words is "twenty-one billion, two hundred twenty-two million, twenty-two thousand, one hundred one".