21310211110 has 32 divisors (see below), whose sum is σ = 40729925952. Its totient is φ = 7999918080.

The previous prime is 21310211081. The next prime is 21310211123. The reversal of 21310211110 is 1111201312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117546 + ... + 237565.

It is an arithmetic number, because the mean of its divisors is an integer number (1272810186).

Almost surely, 2^21310211110 is an apocalyptic number.

21310211110 is a deficient number, since it is larger than the sum of its proper divisors (19419714842).

21310211110 is a wasteful number, since it uses less digits than its factorization.

21310211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355488.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 21310211110 its reverse (1111201312), we get a palindrome (22421412422).

The spelling of 21310211110 in words is "twenty-one billion, three hundred ten million, two hundred eleven thousand, one hundred ten".