2021120221011 has 4 divisors (see below), whose sum is σ = 2694826961352. Its totient is φ = 1347413480672.

The previous prime is 2021120221007. The next prime is 2021120221031. The reversal of 2021120221011 is 1101220211202.

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

It is a cyclic number.

It is not a de Polignac number, because 2021120221011 - 2² = 2021120221007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021120221031) 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, 336853370166 + ... + 336853370171.

It is an arithmetic number, because the mean of its divisors is an integer number (673706740338).

Almost surely, 2^{2021120221011} is an apocalyptic number.

2021120221011 is a deficient number, since it is larger than the sum of its proper divisors (673706740341).

2021120221011 is an equidigital number, since it uses as much as digits as its factorization.

2021120221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673706740340.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2021120221011 its reverse (1101220211202), we get a palindrome (3122340432213).

The spelling of 2021120221011 in words is "two trillion, twenty-one billion, one hundred twenty million, two hundred twenty-one thousand, eleven".