21011310330 has 16 divisors (see below), whose sum is σ = 50427144864. Its totient is φ = 5603016080.

The previous prime is 21011310317. The next prime is 21011310343. The reversal of 21011310330 is 3301311012.

It is an interprime number because it is at equal distance from previous prime (21011310317) and next prime (21011310343).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350188476 + ... + 350188535.

It is an arithmetic number, because the mean of its divisors is an integer number (3151696554).

Almost surely, 2^21011310330 is an apocalyptic number.

21011310330 is an abundant number, since it is smaller than the sum of its proper divisors (29415834534).

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

21011310330 is a wasteful number, since it uses less digits than its factorization.

21011310330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700377021.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21011310330 its reverse (3301311012), we get a palindrome (24312621342).

The spelling of 21011310330 in words is "twenty-one billion, eleven million, three hundred ten thousand, three hundred thirty".