21020010300233 has 4 divisors (see below), whose sum is σ = 24022868914560. Its totient is φ = 18017151685908.

The previous prime is 21020010300197. The next prime is 21020010300293. The reversal of 21020010300233 is 33200301002012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21020010300233 - 2¹² = 21020010296137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21020010300293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1501429307153 + ... + 1501429307166.

It is an arithmetic number, because the mean of its divisors is an integer number (6005717228640).

Almost surely, 2^{21020010300233} is an apocalyptic number.

It is an amenable number.

21020010300233 is a deficient number, since it is larger than the sum of its proper divisors (3002858614327).

21020010300233 is an equidigital number, since it uses as much as digits as its factorization.

21020010300233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002858614326.

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

Adding to 21020010300233 its reverse (33200301002012), we get a palindrome (54220311302245).

The spelling of 21020010300233 in words is "twenty-one trillion, twenty billion, ten million, three hundred thousand, two hundred thirty-three".