20102002001 has 8 divisors (see below), whose sum is σ = 20977794240. Its totient is φ = 19226359152.

The previous prime is 20102001989. The next prime is 20102002003. The reversal of 20102002001 is 10020020102.

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 20102002001 - 2¹⁸ = 20101739857 is a prime.

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 20102002001.

It is not an unprimeable number, because it can be changed into a prime (20102002003) 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, 304190 + ... + 364328.

It is an arithmetic number, because the mean of its divisors is an integer number (2622224280).

Almost surely, 2^20102002001 is an apocalyptic number.

It is an amenable number.

20102002001 is a deficient number, since it is larger than the sum of its proper divisors (875792239).

20102002001 is a wasteful number, since it uses less digits than its factorization.

20102002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74695.

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

Adding to 20102002001 its reverse (10020020102), we get a palindrome (30122022103).

The spelling of 20102002001 in words is "twenty billion, one hundred two million, two thousand, one".