21033011230 has 32 divisors (see below), whose sum is σ = 47201356800. Its totient is φ = 6555743520.

The previous prime is 21033011213. The next prime is 21033011239. The reversal of 21033011230 is 3211033012.

It is a super-2 number, since 2×21033011230² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033011239) 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, 13657030 + ... + 13658569.

It is an arithmetic number, because the mean of its divisors is an integer number (1475042400).

Almost surely, 2^21033011230 is an apocalyptic number.

21033011230 is an abundant number, since it is smaller than the sum of its proper divisors (26168345570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21033011230 is a wasteful number, since it uses less digits than its factorization.

21033011230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27315624.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21033011230 its reverse (3211033012), we get a palindrome (24244044242).

The spelling of 21033011230 in words is "twenty-one billion, thirty-three million, eleven thousand, two hundred thirty".