2100011020001 has 4 divisors (see below), whose sum is σ = 2104136778900. Its totient is φ = 2095885261104.

The previous prime is 2100011019989. The next prime is 2100011020013. The reversal of 2100011020001 is 1000201100012.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2100011019989) and next prime (2100011020013).

It can be written as a sum of positive squares in 2 ways, for example, as 630715518976 + 1469295501025 = 794176^2 + 1212145^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100011020001 - 2⁶ = 2100011019937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100011020301) 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, 2062878686 + ... + 2062879703.

It is an arithmetic number, because the mean of its divisors is an integer number (526034194725).

Almost surely, 2^{2100011020001} is an apocalyptic number.

It is an amenable number.

2100011020001 is a deficient number, since it is larger than the sum of its proper divisors (4125758899).

2100011020001 is an equidigital number, since it uses as much as digits as its factorization.

2100011020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4125758898.

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

Adding to 2100011020001 its reverse (1000201100012), we get a palindrome (3100212120013).

The spelling of 2100011020001 in words is "two trillion, one hundred billion, eleven million, twenty thousand, one".