102210121012 has 12 divisors (see below), whose sum is σ = 181317954916. Its totient is φ = 50404991040.

The previous prime is 102210120989. The next prime is 102210121031. The reversal of 102210121012 is 210121012201.

It can be written as a sum of positive squares in 2 ways, for example, as 20416408996 + 81793712016 = 142886^2 + 285996^2 .

It is a super-3 number, since 3×102210121012³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102210120983 and 102210121001.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 175017039 + ... + 175017622.

Almost surely, 2^102210121012 is an apocalyptic number.

It is an amenable number.

102210121012 is a deficient number, since it is larger than the sum of its proper divisors (79107833904).

102210121012 is a wasteful number, since it uses less digits than its factorization.

102210121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350034738 (or 350034736 counting only the distinct ones).

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

Adding to 102210121012 its reverse (210121012201), we get a palindrome (312331133213).

The spelling of 102210121012 in words is "one hundred two billion, two hundred ten million, one hundred twenty-one thousand, twelve".