102111101122 has 4 divisors (see below), whose sum is σ = 153166651686. Its totient is φ = 51055550560.

The previous prime is 102111101087. The next prime is 102111101123. The reversal of 102111101122 is 221101111201.

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: 221101111201 = 43 ⋅5141886307.

It can be written as a sum of positive squares in only one way, i.e., 72554270881 + 29556830241 = 269359^2 + 171921^2 .

It is not an unprimeable number, because it can be changed into a prime (102111101123) by changing a digit.

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, 25527775279 + ... + 25527775282.

Almost surely, 2^102111101122 is an apocalyptic number.

102111101122 is a deficient number, since it is larger than the sum of its proper divisors (51055550564).

102111101122 is an equidigital number, since it uses as much as digits as its factorization.

102111101122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51055550563.

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

Adding to 102111101122 its reverse (221101111201), we get a palindrome (323212212323).

The spelling of 102111101122 in words is "one hundred two billion, one hundred eleven million, one hundred one thousand, one hundred twenty-two".