102222021212 has 12 divisors (see below), whose sum is σ = 179167618896. Its totient is φ = 51031272960.

The previous prime is 102222021191. The next prime is 102222021221. The reversal of 102222021212 is 212120222201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19931528 + ... + 19936655.

It is an arithmetic number, because the mean of its divisors is an integer number (14930634908).

Almost surely, 2^102222021212 is an apocalyptic number.

It is an amenable number.

102222021212 is a deficient number, since it is larger than the sum of its proper divisors (76945597684).

102222021212 is a wasteful number, since it uses less digits than its factorization.

102222021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39868828 (or 39868826 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 102222021212 its reverse (212120222201), we get a palindrome (314342243413).

The spelling of 102222021212 in words is "one hundred two billion, two hundred twenty-two million, twenty-one thousand, two hundred twelve".