21111030222 has 8 divisors (see below), whose sum is σ = 42222060456. Its totient is φ = 7037010072.

The previous prime is 21111030167. The next prime is 21111030229. The reversal of 21111030222 is 22203011112.

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

21111030222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111030229) 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, 1759252513 + ... + 1759252524.

It is an arithmetic number, because the mean of its divisors is an integer number (5277757557).

Almost surely, 2^21111030222 is an apocalyptic number.

21111030222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21111030222 is a wasteful number, since it uses less digits than its factorization.

21111030222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3518505042.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21111030222 its reverse (22203011112), we get a palindrome (43314041334).

The spelling of 21111030222 in words is "twenty-one billion, one hundred eleven million, thirty thousand, two hundred twenty-two".