21001111112030 has 16 divisors (see below), whose sum is σ = 43202285716320. Its totient is φ = 7200380952672.

The previous prime is 21001111112029. The next prime is 21001111112081. The reversal of 21001111112030 is 3021111110012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 21001111111996 and 21001111112014.

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, 150007936445 + ... + 150007936584.

It is an arithmetic number, because the mean of its divisors is an integer number (2700142857270).

Almost surely, 2^{21001111112030} is an apocalyptic number.

21001111112030 is an abundant number, since it is smaller than the sum of its proper divisors (22201174604290).

21001111112030 is a wasteful number, since it uses less digits than its factorization.

21001111112030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300015873043.

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

Adding to 21001111112030 its reverse (3021111110012), we get a palindrome (24022222222042).

The spelling of 21001111112030 in words is "twenty-one trillion, one billion, one hundred eleven million, one hundred twelve thousand, thirty".