20223212111 has 4 divisors (see below), whose sum is σ = 20875573824. Its totient is φ = 19570850400.

The previous prime is 20223212101. The next prime is 20223212117. The reversal of 20223212111 is 11121232202.

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 20223212111 - 2¹⁰ = 20223211087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20223212111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223212117) 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, 326180810 + ... + 326180871.

It is an arithmetic number, because the mean of its divisors is an integer number (5218893456).

Almost surely, 2^20223212111 is an apocalyptic number.

20223212111 is a deficient number, since it is larger than the sum of its proper divisors (652361713).

20223212111 is an equidigital number, since it uses as much as digits as its factorization.

20223212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652361712.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20223212111 its reverse (11121232202), we get a palindrome (31344444313).

The spelling of 20223212111 in words is "twenty billion, two hundred twenty-three million, two hundred twelve thousand, one hundred eleven".