21110101011030 has 32 divisors (see below), whose sum is σ = 50844542241888. Its totient is φ = 5609326956800.

The previous prime is 21110101011007. The next prime is 21110101011037. The reversal of 21110101011030 is 3011010101112.

It is a junction number, because it is equal to n+sod(n) for n = 21110101010997 and 21110101011015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110101011037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1252073481 + ... + 1252090340.

It is an arithmetic number, because the mean of its divisors is an integer number (1588891945059).

Almost surely, 2^{21110101011030} is an apocalyptic number.

21110101011030 is an abundant number, since it is smaller than the sum of its proper divisors (29734441230858).

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

21110101011030 is a wasteful number, since it uses less digits than its factorization.

21110101011030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504164112.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 21110101011030 its reverse (3011010101112), we get a palindrome (24121111112142).

The spelling of 21110101011030 in words is "twenty-one trillion, one hundred ten billion, one hundred one million, eleven thousand, thirty".