21101232131230 has 16 divisors (see below), whose sum is σ = 37986620706000. Its totient is φ = 8439514436992.

The previous prime is 21101232131201. The next prime is 21101232131267. The reversal of 21101232131230 is 3213123210112.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 122211355 + ... + 122383894.

It is an arithmetic number, because the mean of its divisors is an integer number (2374163794125).

Almost surely, 2^{21101232131230} is an apocalyptic number.

21101232131230 is a deficient number, since it is larger than the sum of its proper divisors (16885388574770).

21101232131230 is a wasteful number, since it uses less digits than its factorization.

21101232131230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244603883.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21101232131230 its reverse (3213123210112), we get a palindrome (24314355341342).

The spelling of 21101232131230 in words is "twenty-one trillion, one hundred one billion, two hundred thirty-two million, one hundred thirty-one thousand, two hundred thirty".