21020311303310 has 32 divisors (see below), whose sum is σ = 41290695676512. Its totient is φ = 7641074004480.

The previous prime is 21020311303309. The next prime is 21020311303427. The reversal of 21020311303310 is 1330311302012.

It is a super-2 number, since 2×21020311303310² (a number of 27 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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33128807 + ... + 33757346.

It is an arithmetic number, because the mean of its divisors is an integer number (1290334239891).

Almost surely, 2^{21020311303310} is an apocalyptic number.

21020311303310 is a deficient number, since it is larger than the sum of its proper divisors (20270384373202).

21020311303310 is a wasteful number, since it uses less digits than its factorization.

21020311303310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66889028.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21020311303310 its reverse (1330311302012), we get a palindrome (22350622605322).

The spelling of 21020311303310 in words is "twenty-one trillion, twenty billion, three hundred eleven million, three hundred three thousand, three hundred ten".