111221201222002 has 4 divisors (see below), whose sum is σ = 166831801833006. Its totient is φ = 55610600611000.

The previous prime is 111221201221979. The next prime is 111221201222023. The reversal of 111221201222002 is 200222102122111.

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., 82029991675681 + 29191209546321 = 9057041^2 + 5402889^2 .

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, 27805300305499 + ... + 27805300305502.

Almost surely, 2^{111221201222002} is an apocalyptic number.

111221201222002 is a deficient number, since it is larger than the sum of its proper divisors (55610600611004).

111221201222002 is an equidigital number, since it uses as much as digits as its factorization.

111221201222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55610600611003.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 111221201222002 its reverse (200222102122111), we get a palindrome (311443303344113).

The spelling of 111221201222002 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred one million, two hundred twenty-two thousand, two".