21030102233 has 16 divisors (see below), whose sum is σ = 25432621056. Its totient is φ = 16999216080.

The previous prime is 21030102227. The next prime is 21030102259. The reversal of 21030102233 is 33220103012.

It is not a de Polignac number, because 21030102233 - 2¹² = 21030098137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21030104233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 908441 + ... + 931302.

It is an arithmetic number, because the mean of its divisors is an integer number (1589538816).

Almost surely, 2^21030102233 is an apocalyptic number.

21030102233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21030102233 is a deficient number, since it is larger than the sum of its proper divisors (4402518823).

21030102233 is a wasteful number, since it uses less digits than its factorization.

21030102233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839844.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21030102233 its reverse (33220103012), we get a palindrome (54250205245).

The spelling of 21030102233 in words is "twenty-one billion, thirty million, one hundred two thousand, two hundred thirty-three".