22121430211 has 4 divisors (see below), whose sum is σ = 22245013800. Its totient is φ = 21997846624.

The previous prime is 22121430203. The next prime is 22121430223. The reversal of 22121430211 is 11203412122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22121430211 - 2³ = 22121430203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121430271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61791526 + ... + 61791883.

It is an arithmetic number, because the mean of its divisors is an integer number (5561253450).

Almost surely, 2^22121430211 is an apocalyptic number.

22121430211 is a deficient number, since it is larger than the sum of its proper divisors (123583589).

22121430211 is a wasteful number, since it uses less digits than its factorization.

22121430211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123583588.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 22121430211 its reverse (11203412122), we get a palindrome (33324842333).

The spelling of 22121430211 in words is "twenty-two billion, one hundred twenty-one million, four hundred thirty thousand, two hundred eleven".