2101021111001 has 8 divisors (see below), whose sum is σ = 2120153871264. Its totient is φ = 2081897818560.

The previous prime is 2101021110977. The next prime is 2101021111009. The reversal of 2101021111001 is 1001111201012.

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 2101021111001 - 2³⁴ = 2083841241817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101021111009) 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, 1920731 + ... + 2809136.

It is an arithmetic number, because the mean of its divisors is an integer number (265019233908).

Almost surely, 2^{2101021111001} is an apocalyptic number.

It is an amenable number.

2101021111001 is a deficient number, since it is larger than the sum of its proper divisors (19132760263).

2101021111001 is a wasteful number, since it uses less digits than its factorization.

2101021111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4733911.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 2101021111001 its reverse (1001111201012), we get a palindrome (3102132312013).

The spelling of 2101021111001 in words is "two trillion, one hundred one billion, twenty-one million, one hundred eleven thousand, one".