21100432030 has 16 divisors (see below), whose sum is σ = 37982913984. Its totient is φ = 8439698080.

The previous prime is 21100432021. The next prime is 21100432049. The reversal of 21100432030 is 3023400112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21100431995 and 21100432013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169275 + ... + 266185.

It is an arithmetic number, because the mean of its divisors is an integer number (2373932124).

Almost surely, 2^21100432030 is an apocalyptic number.

21100432030 is a deficient number, since it is larger than the sum of its proper divisors (16882481954).

21100432030 is a wasteful number, since it uses less digits than its factorization.

21100432030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118691.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21100432030 its reverse (3023400112), we get a palindrome (24123832142).

The spelling of 21100432030 in words is "twenty-one billion, one hundred million, four hundred thirty-two thousand, thirty".