21211326323396 has 48 divisors (see below), whose sum is σ = 40537160294400. Its totient is φ = 9631321048320.

The previous prime is 21211326323381. The next prime is 21211326323419. The reversal of 21211326323396 is 69332362311212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618334781 + ... + 618369083.

It is an arithmetic number, because the mean of its divisors is an integer number (844524172800).

Almost surely, 2^{21211326323396} is an apocalyptic number.

It is an amenable number.

21211326323396 is a deficient number, since it is larger than the sum of its proper divisors (19325833971004).

21211326323396 is a wasteful number, since it uses less digits than its factorization.

21211326323396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48764 (or 48762 counting only the distinct ones).

The product of its digits is 419904, while the sum is 44.

The spelling of 21211326323396 in words is "twenty-one trillion, two hundred eleven billion, three hundred twenty-six million, three hundred twenty-three thousand, three hundred ninety-six".