221030223121 has 8 divisors (see below), whose sum is σ = 226841604704. Its totient is φ = 215249348160.

The previous prime is 221030223119. The next prime is 221030223131. The reversal of 221030223121 is 121322030122.

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

It is a cyclic number.

It is not a de Polignac number, because 221030223121 - 2¹ = 221030223119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221030223131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7611975 + ... + 7640956.

It is an arithmetic number, because the mean of its divisors is an integer number (28355200588).

Almost surely, 2^221030223121 is an apocalyptic number.

It is an amenable number.

221030223121 is a deficient number, since it is larger than the sum of its proper divisors (5811381583).

221030223121 is a wasteful number, since it uses less digits than its factorization.

221030223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15253311.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 221030223121 its reverse (121322030122), we get a palindrome (342352253243).

The spelling of 221030223121 in words is "two hundred twenty-one billion, thirty million, two hundred twenty-three thousand, one hundred twenty-one".