111221111002 has 16 divisors (see below), whose sum is σ = 167225400000. Its totient is φ = 55479391200.

The previous prime is 111221110997. The next prime is 111221111009. The reversal of 111221111002 is 200111122111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (111221111009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3024627 + ... + 3061177.

It is an arithmetic number, because the mean of its divisors is an integer number (10451587500).

Almost surely, 2^111221111002 is an apocalyptic number.

111221111002 is a deficient number, since it is larger than the sum of its proper divisors (56004288998).

111221111002 is a wasteful number, since it uses less digits than its factorization.

111221111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40101.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111221111002 its reverse (200111122111), we get a palindrome (311332233113).

The spelling of 111221111002 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred eleven thousand, two".