20212330111 has 4 divisors (see below), whose sum is σ = 20216906424. Its totient is φ = 20207753800.

The previous prime is 20212330109. The next prime is 20212330157. The reversal of 20212330111 is 11103321202.

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 20212330111 - 2¹ = 20212330109 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 (20212330211) 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, 2281525 + ... + 2290366.

It is an arithmetic number, because the mean of its divisors is an integer number (5054226606).

Almost surely, 2^20212330111 is an apocalyptic number.

20212330111 is a deficient number, since it is larger than the sum of its proper divisors (4576313).

20212330111 is an equidigital number, since it uses as much as digits as its factorization.

20212330111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4576312.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20212330111 its reverse (11103321202), we get a palindrome (31315651313).

The spelling of 20212330111 in words is "twenty billion, two hundred twelve million, three hundred thirty thousand, one hundred eleven".