21330403403100 has 72 divisors (see below), whose sum is σ = 67326509660928. Its totient is φ = 5171006884800.

The previous prime is 21330403403069. The next prime is 21330403403131. The reversal of 21330403403100 is 130430403312.

It is an interprime number because it is at equal distance from previous prime (21330403403069) and next prime (21330403403131).

It is a super-2 number, since 2×21330403403100² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3231876004 + ... + 3231882603.

Almost surely, 2^{21330403403100} is an apocalyptic number.

21330403403100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21330403403100 is an abundant number, since it is smaller than the sum of its proper divisors (45996106257828).

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

21330403403100 is a wasteful number, since it uses less digits than its factorization.

21330403403100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6463758635 (or 6463758628 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21330403403100 its reverse (130430403312), we get a palindrome (21460833806412).

The spelling of 21330403403100 in words is "twenty-one trillion, three hundred thirty billion, four hundred three million, four hundred three thousand, one hundred".