21003301230 has 64 divisors (see below), whose sum is σ = 54021247488. Its totient is φ = 5212563840.

The previous prime is 21003301229. The next prime is 21003301237. The reversal of 21003301230 is 3210330012.

It is a super-2 number, since 2×21003301230² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003301237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 385816 + ... + 436875.

It is an arithmetic number, because the mean of its divisors is an integer number (844081992).

Almost surely, 2^21003301230 is an apocalyptic number.

21003301230 is an abundant number, since it is smaller than the sum of its proper divisors (33017946258).

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

21003301230 is a wasteful number, since it uses less digits than its factorization.

21003301230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822761.

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

Adding to 21003301230 its reverse (3210330012), we get a palindrome (24213631242).

The spelling of 21003301230 in words is "twenty-one billion, three million, three hundred one thousand, two hundred thirty".