221102220210002 has 4 divisors (see below), whose sum is σ = 331653330315006. Its totient is φ = 110551110105000.

The previous prime is 221102220209977. The next prime is 221102220210049. The reversal of 221102220210002 is 200012022201122.

It is a happy number.

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., 116947765149121 + 104154455060881 = 10814239^2 + 10205609^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55275555052499 + ... + 55275555052502.

Almost surely, 2^{221102220210002} is an apocalyptic number.

221102220210002 is a deficient number, since it is larger than the sum of its proper divisors (110551110105004).

221102220210002 is a wasteful number, since it uses less digits than its factorization.

221102220210002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110551110105003.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221102220210002 its reverse (200012022201122), we get a palindrome (421114242411124).

The spelling of 221102220210002 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred twenty million, two hundred ten thousand, two".