21161130331062 has 16 divisors (see below), whose sum is σ = 42322305742272. Its totient is φ = 7053702597000.

The previous prime is 21161130331037. The next prime is 21161130331127. The reversal of 21161130331062 is 26013303116112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10096293 + ... + 12010719.

It is an arithmetic number, because the mean of its divisors is an integer number (2645144108892).

Almost surely, 2^{21161130331062} is an apocalyptic number.

21161130331062 is an abundant number, since it is smaller than the sum of its proper divisors (21161175411210).

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

21161130331062 is a wasteful number, since it uses less digits than its factorization.

21161130331062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756683.

The product of its (nonzero) digits is 3888, while the sum is 30.

Adding to 21161130331062 its reverse (26013303116112), we get a palindrome (47174433447174).

The spelling of 21161130331062 in words is "twenty-one trillion, one hundred sixty-one billion, one hundred thirty million, three hundred thirty-one thousand, sixty-two".