20222021221211 has 4 divisors (see below), whose sum is σ = 20326798533432. Its totient is φ = 20117243908992.

The previous prime is 20222021221159. The next prime is 20222021221223. The reversal of 20222021221211 is 11212212022202.

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 20222021221211 - 2³⁰ = 20220947479387 is a prime.

It is a super-2 number, since 2×20222021221211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20222021221511) 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, 52388655821 + ... + 52388656206.

It is an arithmetic number, because the mean of its divisors is an integer number (5081699633358).

Almost surely, 2^{20222021221211} is an apocalyptic number.

20222021221211 is a deficient number, since it is larger than the sum of its proper divisors (104777312221).

20222021221211 is a wasteful number, since it uses less digits than its factorization.

20222021221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104777312220.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20222021221211 its reverse (11212212022202), we get a palindrome (31434233243413).

The spelling of 20222021221211 in words is "twenty trillion, two hundred twenty-two billion, twenty-one million, two hundred twenty-one thousand, two hundred eleven".