21232771310 has 32 divisors (see below), whose sum is σ = 39939884352. Its totient is φ = 8111783680.

The previous prime is 21232771291. The next prime is 21232771321. The reversal of 21232771310 is 1317723212.

It is a super-2 number, since 2×21232771310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 87530 + ... + 223890.

It is an arithmetic number, because the mean of its divisors is an integer number (1248121386).

Almost surely, 2^21232771310 is an apocalyptic number.

21232771310 is a deficient number, since it is larger than the sum of its proper divisors (18707113042).

21232771310 is a wasteful number, since it uses less digits than its factorization.

21232771310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137068.

The product of its (nonzero) digits is 3528, while the sum is 29.

The spelling of 21232771310 in words is "twenty-one billion, two hundred thirty-two million, seven hundred seventy-one thousand, three hundred ten".