111221201023102 has 4 divisors (see below), whose sum is σ = 166831801534656. Its totient is φ = 55610600511550.

The previous prime is 111221201023087. The next prime is 111221201023123. The reversal of 111221201023102 is 201320102122111.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 111221201023102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27805300255774 + ... + 27805300255777.

It is an arithmetic number, because the mean of its divisors is an integer number (41707950383664).

Almost surely, 2^{111221201023102} is an apocalyptic number.

111221201023102 is a deficient number, since it is larger than the sum of its proper divisors (55610600511554).

111221201023102 is an equidigital number, since it uses as much as digits as its factorization.

111221201023102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55610600511553.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 111221201023102 its reverse (201320102122111), we get a palindrome (312541303145213).

The spelling of 111221201023102 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred one million, twenty-three thousand, one hundred two".