102001021001 has 8 divisors (see below), whose sum is σ = 111350546208. Its totient is φ = 92664280000.

The previous prime is 102001020973. The next prime is 102001021009. The reversal of 102001021001 is 100120100201.

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 102001021001 - 2⁶ = 102001020937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102001021001.

It is not an unprimeable number, because it can be changed into a prime (102001021009) 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, 3179360 + ... + 3211281.

It is an arithmetic number, because the mean of its divisors is an integer number (13918818276).

Almost surely, 2^102001021001 is an apocalyptic number.

102001021001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102001021001 is a deficient number, since it is larger than the sum of its proper divisors (9349525207).

102001021001 is a wasteful number, since it uses less digits than its factorization.

102001021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6392103.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 102001021001 its reverse (100120100201), we get a palindrome (202121121202).

The spelling of 102001021001 in words is "one hundred two billion, one million, twenty-one thousand, one".