20001020233 has 8 divisors (see below), whose sum is σ = 20066786496. Its totient is φ = 19935286800.

The previous prime is 20001020219. The next prime is 20001020243. The reversal of 20001020233 is 33202010002.

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-20001020233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001020213) 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, 1974660 + ... + 1984762.

It is an arithmetic number, because the mean of its divisors is an integer number (2508348312).

Almost surely, 2^20001020233 is an apocalyptic number.

It is an amenable number.

20001020233 is a deficient number, since it is larger than the sum of its proper divisors (65766263).

20001020233 is a wasteful number, since it uses less digits than its factorization.

20001020233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16415.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20001020233 its reverse (33202010002), we get a palindrome (53203030235).

The spelling of 20001020233 in words is "twenty billion, one million, twenty thousand, two hundred thirty-three".