102002212120121 has 8 divisors (see below), whose sum is σ = 110300264421120. Its totient is φ = 93959484505408.

The previous prime is 102002212120103. The next prime is 102002212120139. The reversal of 102002212120121 is 121021212200201.

It is an interprime number because it is at equal distance from previous prime (102002212120103) and next prime (102002212120139).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102002212120121 - 2⁴⁶ = 31633467942457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102002212120121.

It is not an unprimeable number, because it can be changed into a prime (102002212120181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63831170741 + ... + 63831172338.

It is an arithmetic number, because the mean of its divisors is an integer number (13787533052640).

Almost surely, 2^{102002212120121} is an apocalyptic number.

It is an amenable number.

102002212120121 is a deficient number, since it is larger than the sum of its proper divisors (8298052300999).

102002212120121 is a wasteful number, since it uses less digits than its factorization.

102002212120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127662343143.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102002212120121 its reverse (121021212200201), we get a palindrome (223023424320322).

The spelling of 102002212120121 in words is "one hundred two trillion, two billion, two hundred twelve million, one hundred twenty thousand, one hundred twenty-one".