111221121002 has 8 divisors (see below), whose sum is σ = 169181423712. Its totient is φ = 54827313100.

The previous prime is 111221120987. The next prime is 111221121017. The reversal of 111221121002 is 200121122111.

It is an interprime number because it is at equal distance from previous prime (111221120987) and next prime (111221121017).

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 391623524 + ... + 391623807.

It is an arithmetic number, because the mean of its divisors is an integer number (21147677964).

Almost surely, 2^111221121002 is an apocalyptic number.

111221121002 is a deficient number, since it is larger than the sum of its proper divisors (57960302710).

111221121002 is an equidigital number, since it uses as much as digits as its factorization.

111221121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783247404.

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

Adding to 111221121002 its reverse (200121122111), we get a palindrome (311342243113).

The spelling of 111221121002 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred twenty-one thousand, two".