221130203140121 has 24 divisors (see below), whose sum is σ = 243355685680800. Its totient is φ = 200783391145920.

The previous prime is 221130203140057. The next prime is 221130203140139. The reversal of 221130203140121 is 121041302031122.

It is not a de Polignac number, because 221130203140121 - 2⁶ = 221130203140057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221130203140321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 512130506 + ... + 512562108.

It is an arithmetic number, because the mean of its divisors is an integer number (10139820236700).

Almost surely, 2^{221130203140121} is an apocalyptic number.

It is an amenable number.

221130203140121 is a deficient number, since it is larger than the sum of its proper divisors (22225482540679).

221130203140121 is a wasteful number, since it uses less digits than its factorization.

221130203140121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436757 (or 436746 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 221130203140121 its reverse (121041302031122), we get a palindrome (342171505171243).

The spelling of 221130203140121 in words is "two hundred twenty-one trillion, one hundred thirty billion, two hundred three million, one hundred forty thousand, one hundred twenty-one".