21100322033 has 12 divisors (see below), whose sum is σ = 24554574000. Its totient is φ = 18079136712.

The previous prime is 21100322029. The next prime is 21100322039. The reversal of 21100322033 is 33022300112.

It is not a de Polignac number, because 21100322033 - 2² = 21100322029 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100322039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51218 + ... + 211716.

It is an arithmetic number, because the mean of its divisors is an integer number (2046214500).

Almost surely, 2^21100322033 is an apocalyptic number.

It is an amenable number.

21100322033 is a deficient number, since it is larger than the sum of its proper divisors (3454251967).

21100322033 is a wasteful number, since it uses less digits than its factorization.

21100322033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163196 (or 163189 counting only the distinct ones).

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

Adding to 21100322033 its reverse (33022300112), we get a palindrome (54122622145).

The spelling of 21100322033 in words is "twenty-one billion, one hundred million, three hundred twenty-two thousand, thirty-three".