102021222110212 has 24 divisors (see below), whose sum is σ = 180219690352800. Its totient is φ = 50529955979520.

The previous prime is 102021222110201. The next prime is 102021222110261. The reversal of 102021222110212 is 212011222120201.

It is a super-2 number, since 2×102021222110212² (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 102021222110212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3718989 + ... + 14760532.

It is an arithmetic number, because the mean of its divisors is an integer number (7509153764700).

Almost surely, 2^{102021222110212} is an apocalyptic number.

It is an amenable number.

102021222110212 is a deficient number, since it is larger than the sum of its proper divisors (78198468242588).

102021222110212 is a wasteful number, since it uses less digits than its factorization.

102021222110212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18492531 (or 18492529 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102021222110212 its reverse (212011222120201), we get a palindrome (314032444230413).

The spelling of 102021222110212 in words is "one hundred two trillion, twenty-one billion, two hundred twenty-two million, one hundred ten thousand, two hundred twelve".