102121222012 has 6 divisors (see below), whose sum is σ = 178712138528. Its totient is φ = 51060611004.

The previous prime is 102121221953. The next prime is 102121222043. The reversal of 102121222012 is 210222121201.

It is a happy number.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 12765152748 + ... + 12765152755.

Almost surely, 2^102121222012 is an apocalyptic number.

It is an amenable number.

102121222012 is a deficient number, since it is larger than the sum of its proper divisors (76590916516).

102121222012 is a wasteful number, since it uses less digits than its factorization.

102121222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25530305507 (or 25530305505 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102121222012 its reverse (210222121201), we get a palindrome (312343343213).

The spelling of 102121222012 in words is "one hundred two billion, one hundred twenty-one million, two hundred twenty-two thousand, twelve".