20212213211111 has 8 divisors (see below), whose sum is σ = 20414253412224. Its totient is φ = 20011137403000.

The previous prime is 20212213211041. The next prime is 20212213211143. The reversal of 20212213211111 is 11111231221202.

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

It is a cyclic number.

It is not a de Polignac number, because 20212213211111 - 2³⁸ = 19937335304167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212213211011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241056125 + ... + 241139958.

It is an arithmetic number, because the mean of its divisors is an integer number (2551781676528).

Almost surely, 2^{20212213211111} is an apocalyptic number.

20212213211111 is a deficient number, since it is larger than the sum of its proper divisors (202040201113).

20212213211111 is a wasteful number, since it uses less digits than its factorization.

20212213211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482196501.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 20212213211111 its reverse (11111231221202), we get a palindrome (31323444432313).

The spelling of 20212213211111 in words is "twenty trillion, two hundred twelve billion, two hundred thirteen million, two hundred eleven thousand, one hundred eleven".