2021120211001 has 4 divisors (see below), whose sum is σ = 2021210595072. Its totient is φ = 2021029826932.

The previous prime is 2021120210987. The next prime is 2021120211037. The reversal of 2021120211001 is 1001120211202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2021120211001 - 2⁵ = 2021120210969 is a prime.

It is a super-2 number, since 2×2021120211001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021120251001) 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, 45158485 + ... + 45203218.

It is an arithmetic number, because the mean of its divisors is an integer number (505302648768).

Almost surely, 2^{2021120211001} is an apocalyptic number.

It is an amenable number.

2021120211001 is a deficient number, since it is larger than the sum of its proper divisors (90384071).

2021120211001 is an equidigital number, since it uses as much as digits as its factorization.

2021120211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90384070.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2021120211001 its reverse (1001120211202), we get a palindrome (3022240422203).

The spelling of 2021120211001 in words is "two trillion, twenty-one billion, one hundred twenty million, two hundred eleven thousand, one".