221211234422402 has 32 divisors (see below), whose sum is σ = 388607102319744. Its totient is φ = 92459503843200.

The previous prime is 221211234422333. The next prime is 221211234422461. The reversal of 221211234422402 is 204224432112122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67136249 + ... + 70354092.

It is an arithmetic number, because the mean of its divisors is an integer number (12143971947492).

Almost surely, 2^{221211234422402} is an apocalyptic number.

221211234422402 is a deficient number, since it is larger than the sum of its proper divisors (167395867897342).

221211234422402 is a wasteful number, since it uses less digits than its factorization.

221211234422402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137493194.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 221211234422402 its reverse (204224432112122), we get a palindrome (425435666534524).

The spelling of 221211234422402 in words is "two hundred twenty-one trillion, two hundred eleven billion, two hundred thirty-four million, four hundred twenty-two thousand, four hundred two".