21110210030 has 64 divisors (see below), whose sum is σ = 47560020480. Its totient is φ = 6567778944.

The previous prime is 21110210021. The next prime is 21110210057. The reversal of 21110210030 is 3001201112.

It is a junction number, because it is equal to n+sod(n) for n = 21110209993 and 21110210020.

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 31 ways as a sum of consecutive naturals, for example, 142904 + ... + 250283.

It is an arithmetic number, because the mean of its divisors is an integer number (743125320).

Almost surely, 2^21110210030 is an apocalyptic number.

21110210030 is an abundant number, since it is smaller than the sum of its proper divisors (26449810450).

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

21110210030 is a wasteful number, since it uses less digits than its factorization.

21110210030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393273.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21110210030 its reverse (3001201112), we get a palindrome (24111411142).

The spelling of 21110210030 in words is "twenty-one billion, one hundred ten million, two hundred ten thousand, thirty".