2101020001 has 8 divisors (see below), whose sum is σ = 2144193984. Its totient is φ = 2058223440.

The previous prime is 2101019993. The next prime is 2101020023. The reversal of 2101020001 is 1000201012.

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 2101020001 - 2³ = 2101019993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101024001) 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, 83095 + ... + 105388.

It is an arithmetic number, because the mean of its divisors is an integer number (268024248).

Almost surely, 2^2101020001 is an apocalyptic number.

It is an amenable number.

2101020001 is a deficient number, since it is larger than the sum of its proper divisors (43173983).

2101020001 is a wasteful number, since it uses less digits than its factorization.

2101020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188711.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 2101020001 is about 45836.8847218046. The cubic root of 2101020001 is about 1280.7864634965.

Adding to 2101020001 its reverse (1000201012), we get a palindrome (3101221013).

The spelling of 2101020001 in words is "two billion, one hundred one million, twenty thousand, one".