221100220202 has 8 divisors (see below), whose sum is σ = 351159173316. Its totient is φ = 104047162432.

The previous prime is 221100220163. The next prime is 221100220213. The reversal of 221100220202 is 202022001122.

It can be written as a sum of positive squares in 2 ways, for example, as 221060769241 + 39450961 = 470171^2 + 6281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3251473793 + ... + 3251473860.

Almost surely, 2^221100220202 is an apocalyptic number.

221100220202 is a deficient number, since it is larger than the sum of its proper divisors (130058953114).

221100220202 is a wasteful number, since it uses less digits than its factorization.

221100220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6502947672.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221100220202 its reverse (202022001122), we get a palindrome (423122221324).

The spelling of 221100220202 in words is "two hundred twenty-one billion, one hundred million, two hundred twenty thousand, two hundred two".