2221220430 has 96 divisors (see below), whose sum is σ = 6784858080. Its totient is φ = 497053440.

The previous prime is 2221220413. The next prime is 2221220431. The reversal of 2221220430 is 340221222.

2221220430 is a `hidden beast` number, since 2 + 2 + 212 + 20 + 430 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221220431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73425 + ... + 99164.

It is an arithmetic number, because the mean of its divisors is an integer number (70675605).

Almost surely, 2^2221220430 is an apocalyptic number.

2221220430 is an abundant number, since it is smaller than the sum of its proper divisors (4563637650).

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

2221220430 is a wasteful number, since it uses less digits than its factorization.

2221220430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172626 (or 172623 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2221220430 is about 47129.8252702044. The cubic root of 2221220430 is about 1304.7597567177.

Adding to 2221220430 its reverse (340221222), we get a palindrome (2561441652).

The spelling of 2221220430 in words is "two billion, two hundred twenty-one million, two hundred twenty thousand, four hundred thirty".