102102212111212 has 6 divisors (see below), whose sum is σ = 178678871194628. Its totient is φ = 51051106055604.

The previous prime is 102102212111209. The next prime is 102102212111437. The reversal of 102102212111212 is 212111212201201.

It is a happy number.

It is a super-2 number, since 2×102102212111212² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102102212111212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12762776513898 + ... + 12762776513905.

Almost surely, 2^{102102212111212} is an apocalyptic number.

It is an amenable number.

102102212111212 is a deficient number, since it is larger than the sum of its proper divisors (76576659083416).

102102212111212 is a wasteful number, since it uses less digits than its factorization.

102102212111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25525553027807 (or 25525553027805 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 102102212111212 its reverse (212111212201201), we get a palindrome (314213424312413).

The spelling of 102102212111212 in words is "one hundred two trillion, one hundred two billion, two hundred twelve million, one hundred eleven thousand, two hundred twelve".