221113132121012 has 24 divisors (see below), whose sum is σ = 403772605790400. Its totient is φ = 105749549497856.

The previous prime is 221113132120987. The next prime is 221113132121029. The reversal of 221113132121012 is 210121231311122.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 50765039 + ... + 54948297.

It is an arithmetic number, because the mean of its divisors is an integer number (16823858574600).

Almost surely, 2^{221113132121012} is an apocalyptic number.

It is an amenable number.

221113132121012 is a deficient number, since it is larger than the sum of its proper divisors (182659473669388).

221113132121012 is a wasteful number, since it uses less digits than its factorization.

221113132121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4757815 (or 4757813 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 221113132121012 its reverse (210121231311122), we get a palindrome (431234363432134).

The spelling of 221113132121012 in words is "two hundred twenty-one trillion, one hundred thirteen billion, one hundred thirty-two million, one hundred twenty-one thousand, twelve".