21002233001 has 8 divisors (see below), whose sum is σ = 21216479808. Its totient is φ = 20788110000.

The previous prime is 21002232971. The next prime is 21002233013. The reversal of 21002233001 is 10033220012.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21002233001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002233051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331556 + ... + 389786.

It is an arithmetic number, because the mean of its divisors is an integer number (2652059976).

Almost surely, 2^21002233001 is an apocalyptic number.

It is an amenable number.

21002233001 is a deficient number, since it is larger than the sum of its proper divisors (214246807).

21002233001 is a wasteful number, since it uses less digits than its factorization.

21002233001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61903.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21002233001 its reverse (10033220012), we get a palindrome (31035453013).

The spelling of 21002233001 in words is "twenty-one billion, two million, two hundred thirty-three thousand, one".