21330333102 has 64 divisors (see below), whose sum is σ = 46454990400. Its totient is φ = 6490328064.

The previous prime is 21330333053. The next prime is 21330333113. The reversal of 21330333102 is 20133303312.

It is a super-2 number, since 2×21330333102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2703988 + ... + 2711864.

It is an arithmetic number, because the mean of its divisors is an integer number (725859225).

Almost surely, 2^21330333102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21330333102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23227495200).

21330333102 is an abundant number, since it is smaller than the sum of its proper divisors (25124657298).

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

21330333102 is a wasteful number, since it uses less digits than its factorization.

21330333102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8277.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21330333102 its reverse (20133303312), we get a palindrome (41463636414).

The spelling of 21330333102 in words is "twenty-one billion, three hundred thirty million, three hundred thirty-three thousand, one hundred two".