2102100021001 has 8 divisors (see below), whose sum is σ = 2193512405184. Its totient is φ = 2010689031120.

The previous prime is 2102100020983. The next prime is 2102100021017. The reversal of 2102100021001 is 1001200012012.

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 2102100021001 - 2¹³ = 2102100012809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102100021401) 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, 3765511 + ... + 4287571.

It is an arithmetic number, because the mean of its divisors is an integer number (274189050648).

Almost surely, 2^{2102100021001} is an apocalyptic number.

It is an amenable number.

2102100021001 is a deficient number, since it is larger than the sum of its proper divisors (91412384183).

2102100021001 is a wasteful number, since it uses less digits than its factorization.

2102100021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697151.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2102100021001 its reverse (1001200012012), we get a palindrome (3103300033013).

The spelling of 2102100021001 in words is "two trillion, one hundred two billion, one hundred million, twenty-one thousand, one".