221030211030 has 32 divisors (see below), whose sum is σ = 537739258464. Its totient is φ = 58133972736.

The previous prime is 221030211007. The next prime is 221030211089. The reversal of 221030211030 is 30112030122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50461329 + ... + 50465708.

It is an arithmetic number, because the mean of its divisors is an integer number (16804351827).

Almost surely, 2^221030211030 is an apocalyptic number.

221030211030 is an abundant number, since it is smaller than the sum of its proper divisors (316709047434).

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

221030211030 is a wasteful number, since it uses less digits than its factorization.

221030211030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100927120.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 221030211030 its reverse (30112030122), we get a palindrome (251142241152).

The spelling of 221030211030 in words is "two hundred twenty-one billion, thirty million, two hundred eleven thousand, thirty".