102121323212 has 12 divisors (see below), whose sum is σ = 180293841336. Its totient is φ = 50608797120.

The previous prime is 102121323197. The next prime is 102121323299. The reversal of 102121323212 is 212323121201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112965614 + ... + 112966517.

It is an arithmetic number, because the mean of its divisors is an integer number (15024486778).

Almost surely, 2^102121323212 is an apocalyptic number.

It is an amenable number.

102121323212 is a deficient number, since it is larger than the sum of its proper divisors (78172518124).

102121323212 is a wasteful number, since it uses less digits than its factorization.

102121323212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225932248 (or 225932246 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 102121323212 its reverse (212323121201), we get a palindrome (314444444413).

The spelling of 102121323212 in words is "one hundred two billion, one hundred twenty-one million, three hundred twenty-three thousand, two hundred twelve".