21100030222 has 8 divisors (see below), whose sum is σ = 31654672272. Its totient is φ = 10548472800.

The previous prime is 21100030207. The next prime is 21100030243. The reversal of 21100030222 is 22203000112.

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

It is a super-2 number, since 2×21100030222² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753979 + ... + 781462.

It is an arithmetic number, because the mean of its divisors is an integer number (3956834034).

Almost surely, 2^21100030222 is an apocalyptic number.

21100030222 is a deficient number, since it is larger than the sum of its proper divisors (10554642050).

21100030222 is a wasteful number, since it uses less digits than its factorization.

21100030222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542314.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21100030222 its reverse (22203000112), we get a palindrome (43303030334).

The spelling of 21100030222 in words is "twenty-one billion, one hundred million, thirty thousand, two hundred twenty-two".