21232131110 has 8 divisors (see below), whose sum is σ = 38217836016. Its totient is φ = 8492852440.

The previous prime is 21232131101. The next prime is 21232131121. The reversal of 21232131110 is 1113123212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061606546 + ... + 1061606565.

It is an arithmetic number, because the mean of its divisors is an integer number (4777229502).

Almost surely, 2^21232131110 is an apocalyptic number.

21232131110 is a deficient number, since it is larger than the sum of its proper divisors (16985704906).

21232131110 is a wasteful number, since it uses less digits than its factorization.

21232131110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2123213118.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21232131110 its reverse (1113123212), we get a palindrome (22345254322).

The spelling of 21232131110 in words is "twenty-one billion, two hundred thirty-two million, one hundred thirty-one thousand, one hundred ten".