21101001330 has 16 divisors (see below), whose sum is σ = 50642403264. Its totient is φ = 5626933680.

The previous prime is 21101001293. The next prime is 21101001401. The reversal of 21101001330 is 3310010112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351683326 + ... + 351683385.

It is an arithmetic number, because the mean of its divisors is an integer number (3165150204).

Almost surely, 2^21101001330 is an apocalyptic number.

21101001330 is an abundant number, since it is smaller than the sum of its proper divisors (29541401934).

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

21101001330 is a wasteful number, since it uses less digits than its factorization.

21101001330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703366721.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21101001330 its reverse (3310010112), we get a palindrome (24411011442).

The spelling of 21101001330 in words is "twenty-one billion, one hundred one million, one thousand, three hundred thirty".