21003030132 has 48 divisors (see below), whose sum is σ = 57151113600. Its totient is φ = 6000864576.

The previous prime is 21003030119. The next prime is 21003030133. The reversal of 21003030132 is 23103030012.

It is a super-2 number, since 2×21003030132² (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 (21003030133) 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, 2547273 + ... + 2555504.

It is an arithmetic number, because the mean of its divisors is an integer number (1190648200).

Almost surely, 2^21003030132 is an apocalyptic number.

It is an amenable number.

21003030132 is an abundant number, since it is smaller than the sum of its proper divisors (36148083468).

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

21003030132 is a wasteful number, since it uses less digits than its factorization.

21003030132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5102805 (or 5102789 counting only the distinct ones).

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

Adding to 21003030132 its reverse (23103030012), we get a palindrome (44106060144).

The spelling of 21003030132 in words is "twenty-one billion, three million, thirty thousand, one hundred thirty-two".