21022201109 has 8 divisors (see below), whose sum is σ = 25873478400. Its totient is φ = 16632950256.

The previous prime is 21022201033. The next prime is 21022201111. The reversal of 21022201109 is 90110222012.

It is a happy number.

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

It is not a de Polignac number, because 21022201109 - 2¹² = 21022197013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022201159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115506509 + ... + 115506690.

It is an arithmetic number, because the mean of its divisors is an integer number (3234184800).

Almost surely, 2^21022201109 is an apocalyptic number.

It is an amenable number.

21022201109 is a deficient number, since it is larger than the sum of its proper divisors (4851277291).

21022201109 is a wasteful number, since it uses less digits than its factorization.

21022201109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231013219.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 21022201109 in words is "twenty-one billion, twenty-two million, two hundred one thousand, one hundred nine".