2021011111205 has 8 divisors (see below), whose sum is σ = 2425651843104. Its totient is φ = 1616516549200.

The previous prime is 2021011111183. The next prime is 2021011111213. The reversal of 2021011111205 is 5021111101202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2021011111205 - 2⁸ = 2021011110949 is a prime.

It is a super-2 number, since 2×2021011111205² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36512051 + ... + 36567360.

It is an arithmetic number, because the mean of its divisors is an integer number (303206480388).

Almost surely, 2^{2021011111205} is an apocalyptic number.

It is an amenable number.

2021011111205 is a deficient number, since it is larger than the sum of its proper divisors (404640731899).

2021011111205 is an equidigital number, since it uses as much as digits as its factorization.

2021011111205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73084947.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 2021011111205 its reverse (5021111101202), we get a palindrome (7042122212407).

The spelling of 2021011111205 in words is "two trillion, twenty-one billion, eleven million, one hundred eleven thousand, two hundred five".