111211201102 has 4 divisors (see below), whose sum is σ = 166816801656. Its totient is φ = 55605600550.

The previous prime is 111211201093. The next prime is 111211201111. The reversal of 111211201102 is 201102112111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201102112111 = 28669 ⋅7014619.

It is an interprime number because it is at equal distance from previous prime (111211201093) and next prime (111211201111).

It is a congruent number.

It is an unprimeable number.

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, 27802800274 + ... + 27802800277.

It is an arithmetic number, because the mean of its divisors is an integer number (41704200414).

Almost surely, 2^111211201102 is an apocalyptic number.

111211201102 is a deficient number, since it is larger than the sum of its proper divisors (55605600554).

111211201102 is an equidigital number, since it uses as much as digits as its factorization.

111211201102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55605600553.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111211201102 its reverse (201102112111), we get a palindrome (312313313213).

The spelling of 111211201102 in words is "one hundred eleven billion, two hundred eleven million, two hundred one thousand, one hundred two".