21101112011030 has 16 divisors (see below), whose sum is σ = 38017799943984. Its totient is φ = 8432489621280.

The previous prime is 21101112010991. The next prime is 21101112011041. The reversal of 21101112011030 is 3011021110112.

It is a junction number, because it is equal to n+sod(n) for n = 21101112010996 and 21101112011014.

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, 994386752 + ... + 994407971.

It is an arithmetic number, because the mean of its divisors is an integer number (2376112496499).

Almost surely, 2^{21101112011030} is an apocalyptic number.

21101112011030 is a deficient number, since it is larger than the sum of its proper divisors (16916687932954).

21101112011030 is a wasteful number, since it uses less digits than its factorization.

21101112011030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988795791.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 21101112011030 its reverse (3011021110112), we get a palindrome (24112133121142).

The spelling of 21101112011030 in words is "twenty-one trillion, one hundred one billion, one hundred twelve million, eleven thousand, thirty".