221404220030 has 48 divisors (see below), whose sum is σ = 463644040176. Its totient is φ = 75901714560.

The previous prime is 221404219987. The next prime is 221404220039. The reversal of 221404220030 is 30022404122.

It is a junction number, because it is equal to n+sod(n) for n = 221404219984 and 221404220011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221404220039) 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, 5913770 + ... + 5951090.

It is an arithmetic number, because the mean of its divisors is an integer number (9659250837).

Almost surely, 2^221404220030 is an apocalyptic number.

221404220030 is an abundant number, since it is smaller than the sum of its proper divisors (242239820146).

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

221404220030 is a wasteful number, since it uses less digits than its factorization.

221404220030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49449 (or 49442 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 221404220030 its reverse (30022404122), we get a palindrome (251426624152).

The spelling of 221404220030 in words is "two hundred twenty-one billion, four hundred four million, two hundred twenty thousand, thirty".