21110003100030 has 64 divisors (see below), whose sum is σ = 54566445181248. Its totient is φ = 5195812608000.

The previous prime is 21110003100007. The next prime is 21110003100037. The reversal of 21110003100030 is 3000130001112.

It is a junction number, because it is equal to n+sod(n) for n = 21110003099979 and 21110003100015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110003100037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1518102 + ... + 6672678.

It is an arithmetic number, because the mean of its divisors is an integer number (852600705957).

Almost surely, 2^{21110003100030} is an apocalyptic number.

21110003100030 is an abundant number, since it is smaller than the sum of its proper divisors (33456442081218).

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

21110003100030 is a wasteful number, since it uses less digits than its factorization.

21110003100030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5165101.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21110003100030 its reverse (3000130001112), we get a palindrome (24110133101142).

The spelling of 21110003100030 in words is "twenty-one trillion, one hundred ten billion, three million, one hundred thousand, thirty".