102111102120212 has 24 divisors (see below), whose sum is σ = 189210277696104. Its totient is φ = 48051162842112.

The previous prime is 102111102120193. The next prime is 102111102120221. The reversal of 102111102120212 is 212021201111201.

It can be written as a sum of positive squares in 4 ways, for example, as 24246849796 + 102086855270416 = 155714^2 + 10103804^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14566763 + ... + 20406194.

It is an arithmetic number, because the mean of its divisors is an integer number (7883761570671).

Almost surely, 2^{102111102120212} is an apocalyptic number.

It is an amenable number.

102111102120212 is a deficient number, since it is larger than the sum of its proper divisors (87099175575892).

102111102120212 is a wasteful number, since it uses less digits than its factorization.

102111102120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35015915 (or 35015913 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102111102120212 its reverse (212021201111201), we get a palindrome (314132303231413).

The spelling of 102111102120212 in words is "one hundred two trillion, one hundred eleven billion, one hundred two million, one hundred twenty thousand, two hundred twelve".