111111111210002 has 4 divisors (see below), whose sum is σ = 166666666815006. Its totient is φ = 55555555605000.

The previous prime is 111111111209977. The next prime is 111111111210007. The reversal of 111111111210002 is 200012111111111.

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., 101448830096761 + 9662281113241 = 10072181^2 + 3108421^2 .

It is not an unprimeable number, because it can be changed into a prime (111111111210007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777777802499 + ... + 27777777802502.

Almost surely, 2^{111111111210002} is an apocalyptic number.

111111111210002 is a deficient number, since it is larger than the sum of its proper divisors (55555555605004).

111111111210002 is an equidigital number, since it uses as much as digits as its factorization.

111111111210002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55555555605003.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 111111111210002 its reverse (200012111111111), we get a palindrome (311123222321113).

The spelling of 111111111210002 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred eleven million, two hundred ten thousand, two".