21023110030 has 16 divisors (see below), whose sum is σ = 40752490464. Its totient is φ = 7762379040.

The previous prime is 21023110013. The next prime is 21023110037. The reversal of 21023110030 is 3001132012.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023110037) 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 7 ways as a sum of consecutive naturals, for example, 80857986 + ... + 80858245.

It is an arithmetic number, because the mean of its divisors is an integer number (2547030654).

Almost surely, 2^21023110030 is an apocalyptic number.

21023110030 is a deficient number, since it is larger than the sum of its proper divisors (19729380434).

21023110030 is a wasteful number, since it uses less digits than its factorization.

21023110030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161716251.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21023110030 its reverse (3001132012), we get a palindrome (24024242042).

The spelling of 21023110030 in words is "twenty-one billion, twenty-three million, one hundred ten thousand, thirty".