102111122122 has 4 divisors (see below), whose sum is σ = 153166683186. Its totient is φ = 51055561060.

The previous prime is 102111122119. The next prime is 102111122123. The reversal of 102111122122 is 221221111201.

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

It can be written as a sum of positive squares in only one way, i.e., 102060441961 + 50680161 = 319469^2 + 7119^2 .

It is a super-2 number, since 2×102111122122² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102111122096 and 102111122105.

It is not an unprimeable number, because it can be changed into a prime (102111122123) 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, 25527780529 + ... + 25527780532.

Almost surely, 2^102111122122 is an apocalyptic number.

102111122122 is a deficient number, since it is larger than the sum of its proper divisors (51055561064).

102111122122 is an equidigital number, since it uses as much as digits as its factorization.

102111122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51055561063.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102111122122 its reverse (221221111201), we get a palindrome (323332233323).

The spelling of 102111122122 in words is "one hundred two billion, one hundred eleven million, one hundred twenty-two thousand, one hundred twenty-two".