21213362164146 has 8 divisors (see below), whose sum is σ = 42426724328304. Its totient is φ = 7071120721380.

The previous prime is 21213362164133. The next prime is 21213362164151. The reversal of 21213362164146 is 64146126331212.

It is a sphenic number, since it is the product of 3 distinct primes.

21213362164146 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 21213362164098 and 21213362164107.

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 3 ways as a sum of consecutive naturals, for example, 1767780180340 + ... + 1767780180351.

It is an arithmetic number, because the mean of its divisors is an integer number (5303340541038).

Almost surely, 2^{21213362164146} is an apocalyptic number.

21213362164146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21213362164146 is a wasteful number, since it uses less digits than its factorization.

21213362164146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535560360696.

The product of its digits is 248832, while the sum is 42.

Adding to 21213362164146 its reverse (64146126331212), we get a palindrome (85359488495358).

The spelling of 21213362164146 in words is "twenty-one trillion, two hundred thirteen billion, three hundred sixty-two million, one hundred sixty-four thousand, one hundred forty-six".