221102210221202 has 4 divisors (see below), whose sum is σ = 331653315331806. Its totient is φ = 110551105110600.

The previous prime is 221102210221141. The next prime is 221102210221241. The reversal of 221102210221202 is 202122012201122.

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., 217511143531081 + 3591066690121 = 14748259^2 + 1895011^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55275552555299 + ... + 55275552555302.

Almost surely, 2^{221102210221202} is an apocalyptic number.

221102210221202 is a deficient number, since it is larger than the sum of its proper divisors (110551105110604).

221102210221202 is a wasteful number, since it uses less digits than its factorization.

221102210221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110551105110603.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221102210221202 its reverse (202122012201122), we get a palindrome (423224222422324).

The spelling of 221102210221202 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred ten million, two hundred twenty-one thousand, two hundred two".