21022312310 has 16 divisors (see below), whose sum is σ = 39831750000. Its totient is φ = 7966349856.

The previous prime is 21022312303. The next prime is 21022312343. The reversal of 21022312310 is 1321322012.

It is a super-2 number, since 2×21022312310² (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 7 ways as a sum of consecutive naturals, for example, 55321685 + ... + 55322064.

It is an arithmetic number, because the mean of its divisors is an integer number (2489484375).

Almost surely, 2^21022312310 is an apocalyptic number.

21022312310 is a deficient number, since it is larger than the sum of its proper divisors (18809437690).

21022312310 is a wasteful number, since it uses less digits than its factorization.

21022312310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110643775.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21022312310 its reverse (1321322012), we get a palindrome (22343634322).

The spelling of 21022312310 in words is "twenty-one billion, twenty-two million, three hundred twelve thousand, three hundred ten".