221111201010002 has 4 divisors (see below), whose sum is σ = 331666801515006. Its totient is φ = 110555600505000.

The previous prime is 221111201009969. The next prime is 221111201010041. The reversal of 221111201010002 is 200010102111122.

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., 146981701207201 + 74129499802801 = 12123601^2 + 8609849^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55277800252499 + ... + 55277800252502.

Almost surely, 2^{221111201010002} is an apocalyptic number.

221111201010002 is a deficient number, since it is larger than the sum of its proper divisors (110555600505004).

221111201010002 is a wasteful number, since it uses less digits than its factorization.

221111201010002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110555600505003.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221111201010002 its reverse (200010102111122), we get a palindrome (421121303121124).

The spelling of 221111201010002 in words is "two hundred twenty-one trillion, one hundred eleven billion, two hundred one million, ten thousand, two".