21331132030 has 32 divisors (see below), whose sum is σ = 41357673504. Its totient is φ = 7874568576.

The previous prime is 21331132019. The next prime is 21331132051. The reversal of 21331132030 is 3023113312.

It is a junction number, because it is equal to n+sod(n) for n = 21331131989 and 21331132007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815617 + ... + 841363.

It is an arithmetic number, because the mean of its divisors is an integer number (1292427297).

Almost surely, 2^21331132030 is an apocalyptic number.

21331132030 is a deficient number, since it is larger than the sum of its proper divisors (20026541474).

21331132030 is a wasteful number, since it uses less digits than its factorization.

21331132030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32140.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21331132030 its reverse (3023113312), we get a palindrome (24354245342).

The spelling of 21331132030 in words is "twenty-one billion, three hundred thirty-one million, one hundred thirty-two thousand, thirty".