21102223211 has 8 divisors (see below), whose sum is σ = 22119632304. Its totient is φ = 20108753280.

The previous prime is 21102223193. The next prime is 21102223229. The reversal of 21102223211 is 11232220112.

It is an interprime number because it is at equal distance from previous prime (21102223193) and next prime (21102223229).

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

It is a cyclic number.

It is not a de Polignac number, because 21102223211 - 2³⁰ = 20028481387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21102223211.

It is not an unprimeable number, because it can be changed into a prime (21102223511) 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, 5982986 + ... + 5986511.

It is an arithmetic number, because the mean of its divisors is an integer number (2764954038).

Almost surely, 2^21102223211 is an apocalyptic number.

21102223211 is a deficient number, since it is larger than the sum of its proper divisors (1017409093).

21102223211 is a wasteful number, since it uses less digits than its factorization.

21102223211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11969581.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21102223211 its reverse (11232220112), we get a palindrome (32334443323).

The spelling of 21102223211 in words is "twenty-one billion, one hundred two million, two hundred twenty-three thousand, two hundred eleven".