221222202402 has 32 divisors (see below), whose sum is σ = 450149385024. Its totient is φ = 72459000000.

The previous prime is 221222202401. The next prime is 221222202431. The reversal of 221222202402 is 204202222122.

It is a happy number.

221222202402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221222202401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61777 + ... + 668027.

It is an arithmetic number, because the mean of its divisors is an integer number (14067168282).

Almost surely, 2^221222202402 is an apocalyptic number.

221222202402 is an abundant number, since it is smaller than the sum of its proper divisors (228927182622).

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

221222202402 is a wasteful number, since it uses less digits than its factorization.

221222202402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607314.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 221222202402 its reverse (204202222122), we get a palindrome (425424424524).

The spelling of 221222202402 in words is "two hundred twenty-one billion, two hundred twenty-two million, two hundred two thousand, four hundred two".