21231123044302 has 16 divisors (see below), whose sum is σ = 33604708684320. Its totient is φ = 10039925306752.

The previous prime is 21231123044281. The next prime is 21231123044311. The reversal of 21231123044302 is 20344032113212.

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, 2592951823 + ... + 2592960010.

It is an arithmetic number, because the mean of its divisors is an integer number (2100294292770).

Almost surely, 2^{21231123044302} is an apocalyptic number.

21231123044302 is a deficient number, since it is larger than the sum of its proper divisors (12373585640018).

21231123044302 is a wasteful number, since it uses less digits than its factorization.

21231123044302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5185911947.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21231123044302 its reverse (20344032113212), we get a palindrome (41575155157514).

The spelling of 21231123044302 in words is "twenty-one trillion, two hundred thirty-one billion, one hundred twenty-three million, forty-four thousand, three hundred two".