162121531206 has 8 divisors (see below), whose sum is σ = 324243062424. Its totient is φ = 54040510400.

The previous prime is 162121531157. The next prime is 162121531213. The reversal of 162121531206 is 602135121261.

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

162121531206 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13510127595 + ... + 13510127606.

It is an arithmetic number, because the mean of its divisors is an integer number (40530382803).

Almost surely, 2^162121531206 is an apocalyptic number.

162121531206 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.

162121531206 is a wasteful number, since it uses less digits than its factorization.

162121531206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27020255206.

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 162121531206 its reverse (602135121261), we get a palindrome (764256652467).

The spelling of 162121531206 in words is "one hundred sixty-two billion, one hundred twenty-one million, five hundred thirty-one thousand, two hundred six".