102121120012 has 6 divisors (see below), whose sum is σ = 178711960028. Its totient is φ = 51060560004.

The previous prime is 102121120009. The next prime is 102121120021. The reversal of 102121120012 is 210021121201.

It is a junction number, because it is equal to n+sod(n) for n = 102121119974 and 102121120001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12765139998 + ... + 12765140005.

Almost surely, 2^102121120012 is an apocalyptic number.

It is an amenable number.

102121120012 is a deficient number, since it is larger than the sum of its proper divisors (76590840016).

102121120012 is a wasteful number, since it uses less digits than its factorization.

102121120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25530280007 (or 25530280005 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102121120012 its reverse (210021121201), we get a palindrome (312142241213).

The spelling of 102121120012 in words is "one hundred two billion, one hundred twenty-one million, one hundred twenty thousand, twelve".