102001212002121 has 16 divisors (see below), whose sum is σ = 137082915078144. Its totient is φ = 67460239872144.

The previous prime is 102001212002119. The next prime is 102001212002177. The reversal of 102001212002121 is 121200212100201.

It is not a de Polignac number, because 102001212002121 - 2¹ = 102001212002119 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102001212002121.

It is not an unprimeable number, because it can be changed into a prime (102001212002101) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 5154301 + ... + 15184506.

It is an arithmetic number, because the mean of its divisors is an integer number (8567682192384).

Almost surely, 2^{102001212002121} is an apocalyptic number.

It is an amenable number.

102001212002121 is a deficient number, since it is larger than the sum of its proper divisors (35081703076023).

102001212002121 is a wasteful number, since it uses less digits than its factorization.

102001212002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20352100.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102001212002121 its reverse (121200212100201), we get a palindrome (223201424102322).

The spelling of 102001212002121 in words is "one hundred two trillion, one billion, two hundred twelve million, two thousand, one hundred twenty-one".