21000102033 has 8 divisors (see below), whose sum is σ = 28006789600. Its totient is φ = 13996741248.

The previous prime is 21000102017. The next prime is 21000102077. The reversal of 21000102033 is 33020100012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21000102033 - 2⁴ = 21000102017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000102433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816928 + ... + 842241.

It is an arithmetic number, because the mean of its divisors is an integer number (3500848700).

Almost surely, 2^21000102033 is an apocalyptic number.

It is an amenable number.

21000102033 is a deficient number, since it is larger than the sum of its proper divisors (7006687567).

21000102033 is a wasteful number, since it uses less digits than its factorization.

21000102033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663391.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 21000102033 its reverse (33020100012), we get a palindrome (54020202045).

The spelling of 21000102033 in words is "twenty-one billion, one hundred two thousand, thirty-three".