102002122010121 has 16 divisors (see below), whose sum is σ = 137228809011840. Its totient is φ = 67390952635520.

The previous prime is 102002122010101. The next prime is 102002122010137. The reversal of 102002122010121 is 121010221200201.

It is a cyclic number.

It is not a de Polignac number, because 102002122010121 - 2¹⁰ = 102002122009097 is a prime.

It is a super-2 number, since 2×102002122010121² (a number of 29 digits) contains 22 as substring.

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 102002122010121.

It is not an unprimeable number, because it can be changed into a prime (102002122010101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315812676 + ... + 316135493.

It is an arithmetic number, because the mean of its divisors is an integer number (8576800563240).

Almost surely, 2^{102002122010121} is an apocalyptic number.

It is an amenable number.

102002122010121 is a deficient number, since it is larger than the sum of its proper divisors (35226687001719).

102002122010121 is a wasteful number, since it uses less digits than its factorization.

102002122010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631948656.

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

Adding to 102002122010121 its reverse (121010221200201), we get a palindrome (223012343210322).

The spelling of 102002122010121 in words is "one hundred two trillion, two billion, one hundred twenty-two million, ten thousand, one hundred twenty-one".