21112131110030 has 16 divisors (see below), whose sum is σ = 38032261830000. Its totient is φ = 8438091148032.

The previous prime is 21112131110011. The next prime is 21112131110047. The reversal of 21112131110030 is 3001113121112.

It is a junction number, because it is equal to n+sod(n) for n = 21112131109990 and 21112131110008.

It is a congruent number.

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, 845148884 + ... + 845173863.

It is an arithmetic number, because the mean of its divisors is an integer number (2377016364375).

Almost surely, 2^{21112131110030} is an apocalyptic number.

21112131110030 is a deficient number, since it is larger than the sum of its proper divisors (16920130719970).

21112131110030 is a wasteful number, since it uses less digits than its factorization.

21112131110030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690324003.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 21112131110030 its reverse (3001113121112), we get a palindrome (24113244231142).

The spelling of 21112131110030 in words is "twenty-one trillion, one hundred twelve billion, one hundred thirty-one million, one hundred ten thousand, thirty".