111012111221002 has 4 divisors (see below), whose sum is σ = 166518166831506. Its totient is φ = 55506055610500.

The previous prime is 111012111220993. The next prime is 111012111221047. The reversal of 111012111221002 is 200122111210111.

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., 108880689337281 + 2131421883721 = 10434591^2 + 1459939^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27753027805249 + ... + 27753027805252.

Almost surely, 2^{111012111221002} is an apocalyptic number.

111012111221002 is a deficient number, since it is larger than the sum of its proper divisors (55506055610504).

111012111221002 is an equidigital number, since it uses as much as digits as its factorization.

111012111221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55506055610503.

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

Adding to 111012111221002 its reverse (200122111210111), we get a palindrome (311134222431113).

The spelling of 111012111221002 in words is "one hundred eleven trillion, twelve billion, one hundred eleven million, two hundred twenty-one thousand, two".