101010002001 has 4 divisors (see below), whose sum is σ = 134680002672. Its totient is φ = 67340001332.

The previous prime is 101010001997. The next prime is 101010002003. The reversal of 101010002001 is 100200010101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100200010101 = 3 ⋅33400003367.

It is a cyclic number.

It is not a de Polignac number, because 101010002001 - 2² = 101010001997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101010002003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16835000331 + ... + 16835000336.

It is an arithmetic number, because the mean of its divisors is an integer number (33670000668).

Almost surely, 2^101010002001 is an apocalyptic number.

It is an amenable number.

101010002001 is a deficient number, since it is larger than the sum of its proper divisors (33670000671).

101010002001 is an equidigital number, since it uses as much as digits as its factorization.

101010002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33670000670.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 101010002001 its reverse (100200010101), we get a palindrome (201210012102).

The spelling of 101010002001 in words is "one hundred one billion, ten million, two thousand, one".