111222002121002 has 4 divisors (see below), whose sum is σ = 166833003181506. Its totient is φ = 55611001060500.

The previous prime is 111222002120953. The next prime is 111222002121011. The reversal of 111222002121002 is 200121200222111.

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., 62828149869241 + 48393852251761 = 7926421^2 + 6956569^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27805500530249 + ... + 27805500530252.

Almost surely, 2^{111222002121002} is an apocalyptic number.

111222002121002 is a deficient number, since it is larger than the sum of its proper divisors (55611001060504).

111222002121002 is an equidigital number, since it uses as much as digits as its factorization.

111222002121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55611001060503.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111222002121002 its reverse (200121200222111), we get a palindrome (311343202343113).

The spelling of 111222002121002 in words is "one hundred eleven trillion, two hundred twenty-two billion, two million, one hundred twenty-one thousand, two".