221441403434 has 16 divisors (see below), whose sum is σ = 344979043200. Its totient is φ = 106528245504.

The previous prime is 221441403431. The next prime is 221441403437. The reversal of 221441403434 is 434304144122.

It is an interprime number because it is at equal distance from previous prime (221441403431) and next prime (221441403437).

It is a self number, because there is not a number n which added to its sum of digits gives 221441403434.

It is not an unprimeable number, because it can be changed into a prime (221441403431) 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, 19958519 + ... + 19969610.

It is an arithmetic number, because the mean of its divisors is an integer number (21561190200).

Almost surely, 2^221441403434 is an apocalyptic number.

221441403434 is a deficient number, since it is larger than the sum of its proper divisors (123537639766).

221441403434 is a wasteful number, since it uses less digits than its factorization.

221441403434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39928237.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 221441403434 its reverse (434304144122), we get a palindrome (655745547556).

The spelling of 221441403434 in words is "two hundred twenty-one billion, four hundred forty-one million, four hundred three thousand, four hundred thirty-four".