21213233321310 has 48 divisors (see below), whose sum is σ = 55168381313136. Its totient is φ = 5655428918784.

The previous prime is 21213233321237. The next prime is 21213233321321. The reversal of 21213233321310 is 1312333231212.

21213233321310 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 3 + 23 + 3 + 321 + 310 = 666.

It is a super-2 number, since 2×21213233321310² (a number of 27 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 23 ways as a sum of consecutive naturals, for example, 29503219 + ... + 30213678.

It is an arithmetic number, because the mean of its divisors is an integer number (1149341277357).

Almost surely, 2^{21213233321310} is an apocalyptic number.

21213233321310 is an abundant number, since it is smaller than the sum of its proper divisors (33955147991826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21213233321310 is a wasteful number, since it uses less digits than its factorization.

21213233321310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59720857 (or 59720854 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 21213233321310 its reverse (1312333231212), we get a palindrome (22525566552522).

The spelling of 21213233321310 in words is "twenty-one trillion, two hundred thirteen billion, two hundred thirty-three million, three hundred twenty-one thousand, three hundred ten".