21311133310 has 8 divisors (see below), whose sum is σ = 38360039976. Its totient is φ = 8524453320.

The previous prime is 21311133307. The next prime is 21311133323. The reversal of 21311133310 is 1333111312.

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

It is a super-2 number, since 2×21311133310² (a number of 21 digits) contains 22 as substring.

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, 1065556656 + ... + 1065556675.

It is an arithmetic number, because the mean of its divisors is an integer number (4795004997).

Almost surely, 2^21311133310 is an apocalyptic number.

21311133310 is a deficient number, since it is larger than the sum of its proper divisors (17048906666).

21311133310 is a wasteful number, since it uses less digits than its factorization.

21311133310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131113338.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 21311133310 its reverse (1333111312), we get a palindrome (22644244622).

The spelling of 21311133310 in words is "twenty-one billion, three hundred eleven million, one hundred thirty-three thousand, three hundred ten".