2021221120011 has 16 divisors (see below), whose sum is σ = 2700839116800. Its totient is φ = 1344542460608.

The previous prime is 2021221119979. The next prime is 2021221120033. The reversal of 2021221120011 is 1100211221202.

It is a cyclic number.

It is not a de Polignac number, because 2021221120011 - 2⁵ = 2021221119979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021221120111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16907095 + ... + 17026223.

It is an arithmetic number, because the mean of its divisors is an integer number (168802444800).

Almost surely, 2^{2021221120011} is an apocalyptic number.

2021221120011 is a deficient number, since it is larger than the sum of its proper divisors (679617996789).

2021221120011 is a wasteful number, since it uses less digits than its factorization.

2021221120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131418.

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

Adding to 2021221120011 its reverse (1100211221202), we get a palindrome (3121432341213).

The spelling of 2021221120011 in words is "two trillion, twenty-one billion, two hundred twenty-one million, one hundred twenty thousand, eleven".