21101331100230 has 32 divisors (see below), whose sum is σ = 56270216268000. Its totient is φ = 5627021626656.

The previous prime is 21101331100153. The next prime is 21101331100237. The reversal of 21101331100230 is 3200113310112.

21101331100230 is a `hidden beast` number, since 2 + 1 + 1 + 0 + 1 + 331 + 100 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101331100237) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 39076538805 + ... + 39076539344.

It is an arithmetic number, because the mean of its divisors is an integer number (1758444258375).

Almost surely, 2^{21101331100230} is an apocalyptic number.

21101331100230 is an abundant number, since it is smaller than the sum of its proper divisors (35168885167770).

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

21101331100230 is a wasteful number, since it uses less digits than its factorization.

21101331100230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78153078165 (or 78153078159 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21101331100230 its reverse (3200113310112), we get a palindrome (24301444410342).

The spelling of 21101331100230 in words is "twenty-one trillion, one hundred one billion, three hundred thirty-one million, one hundred thousand, two hundred thirty".