21210131111322 has 32 divisors (see below), whose sum is σ = 43432002694080. Its totient is φ = 6901611373440.

The previous prime is 21210131111321. The next prime is 21210131111327. The reversal of 21210131111322 is 22311113101212.

It is not an unprimeable number, because it can be changed into a prime (21210131111321) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 23440297 + ... + 24328332.

It is an arithmetic number, because the mean of its divisors is an integer number (1357250084190).

Almost surely, 2^{21210131111322} is an apocalyptic number.

21210131111322 is an abundant number, since it is smaller than the sum of its proper divisors (22221871582758).

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

21210131111322 is a wasteful number, since it uses less digits than its factorization.

21210131111322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47770398.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 21210131111322 its reverse (22311113101212), we get a palindrome (43521244212534).

The spelling of 21210131111322 in words is "twenty-one trillion, two hundred ten billion, one hundred thirty-one million, one hundred eleven thousand, three hundred twenty-two".