21211044002346 has 32 divisors (see below), whose sum is σ = 46278889272000. Its totient is φ = 6427554673280.

The previous prime is 21211044002321. The next prime is 21211044002347. The reversal of 21211044002346 is 64320044011212.

It is not an unprimeable number, because it can be changed into a prime (21211044002347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13313950 + ... + 14821718.

It is an arithmetic number, because the mean of its divisors is an integer number (1446215289750).

Almost surely, 2^{21211044002346} is an apocalyptic number.

21211044002346 is an abundant number, since it is smaller than the sum of its proper divisors (25067845269654).

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

21211044002346 is a wasteful number, since it uses less digits than its factorization.

21211044002346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720934.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 21211044002346 its reverse (64320044011212), we get a palindrome (85531088013558).

The spelling of 21211044002346 in words is "twenty-one trillion, two hundred eleven billion, forty-four million, two thousand, three hundred forty-six".