21102132321230 has 16 divisors (see below), whose sum is σ = 38606524051104. Its totient is φ = 8302478290080.

The previous prime is 21102132321197. The next prime is 21102132321269. The reversal of 21102132321230 is 3212323120112.

It is a junction number, because it is equal to n+sod(n) for n = 21102132321196 and 21102132321205.

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, 17296829162 + ... + 17296830381.

It is an arithmetic number, because the mean of its divisors is an integer number (2412907753194).

Almost surely, 2^{21102132321230} is an apocalyptic number.

21102132321230 is a deficient number, since it is larger than the sum of its proper divisors (17504391729874).

21102132321230 is a wasteful number, since it uses less digits than its factorization.

21102132321230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34593659611.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21102132321230 its reverse (3212323120112), we get a palindrome (24314455441342).

The spelling of 21102132321230 in words is "twenty-one trillion, one hundred two billion, one hundred thirty-two million, three hundred twenty-one thousand, two hundred thirty".