21213243202310 has 64 divisors (see below), whose sum is σ = 40474696025088. Its totient is φ = 7977325492224.

The previous prime is 21213243202267. The next prime is 21213243202351. The reversal of 21213243202310 is 1320234231212.

It is a super-2 number, since 2×21213243202310² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21213243202310.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1936039352 + ... + 1936050308.

It is an arithmetic number, because the mean of its divisors is an integer number (632417125392).

Almost surely, 2^{21213243202310} is an apocalyptic number.

21213243202310 is a deficient number, since it is larger than the sum of its proper divisors (19261452822778).

21213243202310 is a wasteful number, since it uses less digits than its factorization.

21213243202310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22545.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21213243202310 its reverse (1320234231212), we get a palindrome (22533477433522).

The spelling of 21213243202310 in words is "twenty-one trillion, two hundred thirteen billion, two hundred forty-three million, two hundred two thousand, three hundred ten".