21014034030 has 96 divisors (see below), whose sum is σ = 59686174080. Its totient is φ = 5087240640.

The previous prime is 21014034023. The next prime is 21014034037. The reversal of 21014034030 is 3043041012.

It is an interprime number because it is at equal distance from previous prime (21014034023) and next prime (21014034037).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21014033994 and 21014034012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014034037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 717249 + ... + 745971.

It is an arithmetic number, because the mean of its divisors is an integer number (621730980).

Almost surely, 2^21014034030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21014034030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29843087040).

21014034030 is an abundant number, since it is smaller than the sum of its proper divisors (38672140050).

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

21014034030 is a wasteful number, since it uses less digits than its factorization.

21014034030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29486 (or 29483 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21014034030 its reverse (3043041012), we get a palindrome (24057075042).

The spelling of 21014034030 in words is "twenty-one billion, fourteen million, thirty-four thousand, thirty".