111221020011002 has 24 divisors (see below), whose sum is σ = 183394352875188. Its totient is φ = 50550171534720.

The previous prime is 111221020011001. The next prime is 111221020011029. The reversal of 111221020011002 is 200110020122111.

It can be written as a sum of positive squares in 2 ways, for example, as 92587906752121 + 18633113258881 = 9622261^2 + 4316609^2 .

It is not an unprimeable number, because it can be changed into a prime (111221020011001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19454063 + ... + 24513314.

Almost surely, 2^{111221020011002} is an apocalyptic number.

111221020011002 is a deficient number, since it is larger than the sum of its proper divisors (72173332864186).

111221020011002 is a wasteful number, since it uses less digits than its factorization.

111221020011002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43977854 (or 43977843 counting only the distinct ones).

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

Adding to 111221020011002 its reverse (200110020122111), we get a palindrome (311331040133113).

The spelling of 111221020011002 in words is "one hundred eleven trillion, two hundred twenty-one billion, twenty million, eleven thousand, two".