221011221010202 has 64 divisors (see below), whose sum is σ = 388351230935040. Its totient is φ = 92375898443136.

The previous prime is 221011221010159. The next prime is 221011221010291. The reversal of 221011221010202 is 202010122110122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2827384523 + ... + 2827462689.

It is an arithmetic number, because the mean of its divisors is an integer number (6067987983360).

Almost surely, 2^{221011221010202} is an apocalyptic number.

221011221010202 is a deficient number, since it is larger than the sum of its proper divisors (167340009924838).

221011221010202 is a wasteful number, since it uses less digits than its factorization.

221011221010202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105315.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221011221010202 its reverse (202010122110122), we get a palindrome (423021343120324).

The spelling of 221011221010202 in words is "two hundred twenty-one trillion, eleven billion, two hundred twenty-one million, ten thousand, two hundred two".