21210413123310 has 16 divisors (see below), whose sum is σ = 50904991496016. Its totient is φ = 5656110166208.

The previous prime is 21210413123303. The next prime is 21210413123311. The reversal of 21210413123310 is 1332131401212.

It is a super-2 number, since 2×21210413123310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210413123311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353506885359 + ... + 353506885418.

It is an arithmetic number, because the mean of its divisors is an integer number (3181561968501).

Almost surely, 2^{21210413123310} is an apocalyptic number.

21210413123310 is an abundant number, since it is smaller than the sum of its proper divisors (29694578372706).

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

21210413123310 is a wasteful number, since it uses less digits than its factorization.

21210413123310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707013770787.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21210413123310 its reverse (1332131401212), we get a palindrome (22542544524522).

The spelling of 21210413123310 in words is "twenty-one trillion, two hundred ten billion, four hundred thirteen million, one hundred twenty-three thousand, three hundred ten".