21100310311030 has 16 divisors (see below), whose sum is σ = 38150874969984. Its totient is φ = 8402276033280.

The previous prime is 21100310311019. The next prime is 21100310311049. The reversal of 21100310311030 is 3011301300112.

It is a junction number, because it is equal to n+sod(n) for n = 21100310310995 and 21100310311013.

It is a congruent number.

It is an unprimeable number.

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, 4731009051 + ... + 4731013510.

It is an arithmetic number, because the mean of its divisors is an integer number (2384429685624).

Almost surely, 2^{21100310311030} is an apocalyptic number.

21100310311030 is a deficient number, since it is larger than the sum of its proper divisors (17050564658954).

21100310311030 is a wasteful number, since it uses less digits than its factorization.

21100310311030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9462022791.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 21100310311030 its reverse (3011301300112), we get a palindrome (24111611611142).

The spelling of 21100310311030 in words is "twenty-one trillion, one hundred billion, three hundred ten million, three hundred eleven thousand, thirty".