2021002011101 has 8 divisors (see below), whose sum is σ = 2067678262584. Its totient is φ = 1974642209280.

The previous prime is 2021002011079. The next prime is 2021002011121. The reversal of 2021002011101 is 1011102001202.

It can be written as a sum of positive squares in 4 ways, for example, as 343277638201 + 1677724372900 = 585899^2 + 1295270^2 .

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 2021002011101 - 2²² = 2020997816797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021002011121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79099496 + ... + 79125041.

It is an arithmetic number, because the mean of its divisors is an integer number (258459782823).

Almost surely, 2^{2021002011101} is an apocalyptic number.

It is an amenable number.

2021002011101 is a deficient number, since it is larger than the sum of its proper divisors (46676251483).

2021002011101 is a wasteful number, since it uses less digits than its factorization.

2021002011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158224831.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2021002011101 its reverse (1011102001202), we get a palindrome (3032104012303).

The spelling of 2021002011101 in words is "two trillion, twenty-one billion, two million, eleven thousand, one hundred one".