221210210011202 has 4 divisors (see below), whose sum is σ = 331815315016806. Its totient is φ = 110605105005600.

The previous prime is 221210210011181. The next prime is 221210210011207. The reversal of 221210210011202 is 202110012012122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 170572768243201 + 50637441768001 = 13060351^2 + 7115999^2 .

It is not an unprimeable number, because it can be changed into a prime (221210210011207) 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 as a sum of consecutive naturals, namely, 55302552502799 + ... + 55302552502802.

Almost surely, 2^{221210210011202} is an apocalyptic number.

221210210011202 is a deficient number, since it is larger than the sum of its proper divisors (110605105005604).

221210210011202 is a wasteful number, since it uses less digits than its factorization.

221210210011202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110605105005603.

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

Adding to 221210210011202 its reverse (202110012012122), we get a palindrome (423320222023324).

The spelling of 221210210011202 in words is "two hundred twenty-one trillion, two hundred ten billion, two hundred ten million, eleven thousand, two hundred two".