221133222030 has 64 divisors (see below), whose sum is σ = 642215485440. Its totient is φ = 47571515904.

The previous prime is 221133221917. The next prime is 221133222043. The reversal of 221133222030 is 30222331122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 221133221988 and 221133222006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30967470 + ... + 30974609.

It is an arithmetic number, because the mean of its divisors is an integer number (10034616960).

Almost surely, 2^221133222030 is an apocalyptic number.

221133222030 is an abundant number, since it is smaller than the sum of its proper divisors (421082263410).

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

221133222030 is a wasteful number, since it uses less digits than its factorization.

221133222030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61942113.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221133222030 its reverse (30222331122), we get a palindrome (251355553152).

The spelling of 221133222030 in words is "two hundred twenty-one billion, one hundred thirty-three million, two hundred twenty-two thousand, thirty".