102001001 has 8 divisors (see below), whose sum is σ = 104480640. Its totient is φ = 99549648.

The previous prime is 102000979. The next prime is 102001007. The reversal of 102001001 is 100100201.

It is a happy number.

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 102001001 - 2⁶ = 102000937 is a prime.

It is a Duffinian number.

102001001 is a modest number, since divided by 1001 gives 102 as remainder.

It is not an unprimeable number, because it can be changed into a prime (102001007) 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, 320 + ... + 14286.

It is an arithmetic number, because the mean of its divisors is an integer number (13060080).

Almost surely, 2^102001001 is an apocalyptic number.

It is an amenable number.

102001001 is a deficient number, since it is larger than the sum of its proper divisors (2479639).

102001001 is a wasteful number, since it uses less digits than its factorization.

102001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14143.

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 102001001 is about 10099.5544951250. The cubic root of 102001001 is about 467.2344012622.

Adding to 102001001 its reverse (100100201), we get a palindrome (202101202).

The spelling of 102001001 in words is "one hundred two million, one thousand, one".