21233332109 has 16 divisors (see below), whose sum is σ = 23816298240. Its totient is φ = 18762624000.

The previous prime is 21233332097. The next prime is 21233332121. The reversal of 21233332109 is 90123333212.

It is an interprime number because it is at equal distance from previous prime (21233332097) and next prime (21233332121).

It is a cyclic number.

It is not a de Polignac number, because 21233332109 - 2¹² = 21233328013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233302109) 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, 35357 + ... + 209085.

It is an arithmetic number, because the mean of its divisors is an integer number (1488518640).

Almost surely, 2^21233332109 is an apocalyptic number.

It is an amenable number.

21233332109 is a deficient number, since it is larger than the sum of its proper divisors (2582966131).

21233332109 is a wasteful number, since it uses less digits than its factorization.

21233332109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174052.

The product of its (nonzero) digits is 5832, while the sum is 29.

It can be divided in two parts, 212333 and 32109, that added together give a palindrome (244442).

The spelling of 21233332109 in words is "twenty-one billion, two hundred thirty-three million, three hundred thirty-two thousand, one hundred nine".