21330203001 has 16 divisors (see below), whose sum is σ = 29286052800. Its totient is φ = 13799274048.

The previous prime is 21330202979. The next prime is 21330203003. The reversal of 21330203001 is 10030203312.

It is not a de Polignac number, because 21330203001 - 2⁹ = 21330202489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21330203003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211446 + ... + 295583.

It is an arithmetic number, because the mean of its divisors is an integer number (1830378300).

Almost surely, 2^21330203001 is an apocalyptic number.

It is an amenable number.

21330203001 is a deficient number, since it is larger than the sum of its proper divisors (7955849799).

21330203001 is a wasteful number, since it uses less digits than its factorization.

21330203001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507448.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21330203001 its reverse (10030203312), we get a palindrome (31360406313).

The spelling of 21330203001 in words is "twenty-one billion, three hundred thirty million, two hundred three thousand, one".