111111211220102 has 16 divisors (see below), whose sum is σ = 167242865486400. Its totient is φ = 55363899847872.

The previous prime is 111111211220101. The next prime is 111111211220143. The reversal of 111111211220102 is 201022112111111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111211220101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76897727 + ... + 78329322.

It is an arithmetic number, because the mean of its divisors is an integer number (10452679092900).

Almost surely, 2^{111111211220102} is an apocalyptic number.

111111211220102 is a deficient number, since it is larger than the sum of its proper divisors (56131654266298).

111111211220102 is a wasteful number, since it uses less digits than its factorization.

111111211220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155228287.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111111211220102 its reverse (201022112111111), we get a palindrome (312133323331213).

The spelling of 111111211220102 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred eleven million, two hundred twenty thousand, one hundred two".