102002012001 has 24 divisors (see below), whose sum is σ = 162785825280. Its totient is φ = 61218596736.

The previous prime is 102002011981. The next prime is 102002012009. The reversal of 102002012001 is 100210200201.

It is not a de Polignac number, because 102002012001 - 2¹⁰ = 102002010977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (102002012009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14489521 + ... + 14496558.

It is an arithmetic number, because the mean of its divisors is an integer number (6782742720).

Almost surely, 2^102002012001 is an apocalyptic number.

It is an amenable number.

102002012001 is a deficient number, since it is larger than the sum of its proper divisors (60783813279).

102002012001 is a wasteful number, since it uses less digits than its factorization.

102002012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28986125 (or 28986122 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 102002012001 its reverse (100210200201), we get a palindrome (202212212202).

The spelling of 102002012001 in words is "one hundred two billion, two million, twelve thousand, one".