102120210212 has 24 divisors (see below), whose sum is σ = 179512043256. Its totient is φ = 50831140608.

The previous prime is 102120210193. The next prime is 102120210221. The reversal of 102120210212 is 212012021201.

It can be written as a sum of positive squares in 4 ways, for example, as 482944576 + 101637265636 = 21976^2 + 318806^2 .

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, 8394038 + ... + 8406194.

It is an arithmetic number, because the mean of its divisors is an integer number (7479668469).

Almost surely, 2^102120210212 is an apocalyptic number.

It is an amenable number.

102120210212 is a deficient number, since it is larger than the sum of its proper divisors (77391833044).

102120210212 is a wasteful number, since it uses less digits than its factorization.

102120210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21407 (or 21405 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102120210212 its reverse (212012021201), we get a palindrome (314132231413).

The spelling of 102120210212 in words is "one hundred two billion, one hundred twenty million, two hundred ten thousand, two hundred twelve".