102121221022012 has 24 divisors (see below), whose sum is σ = 178998666638400. Its totient is φ = 50978763850560.

The previous prime is 102121221021997. The next prime is 102121221022043. The reversal of 102121221022012 is 210220122121201.

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 in 7 ways as a sum of consecutive naturals, for example, 19153837 + ... + 23897947.

It is an arithmetic number, because the mean of its divisors is an integer number (7458277776600).

Almost surely, 2^{102121221022012} is an apocalyptic number.

It is an amenable number.

102121221022012 is a deficient number, since it is larger than the sum of its proper divisors (76877445616388).

102121221022012 is a wasteful number, since it uses less digits than its factorization.

102121221022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752741 (or 4752739 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102121221022012 its reverse (210220122121201), we get a palindrome (312341343143213).

The spelling of 102121221022012 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred twenty-one million, twenty-two thousand, twelve".