20123212230111 has 8 divisors (see below), whose sum is σ = 26831344247344. Its totient is φ = 13415277516480.

The previous prime is 20123212230103. The next prime is 20123212230131. The reversal of 20123212230111 is 11103221232102.

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

It is not a de Polignac number, because 20123212230111 - 2³ = 20123212230103 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 (20123212230131) 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, 49087756 + ... + 49496001.

It is an arithmetic number, because the mean of its divisors is an integer number (3353918030918).

Almost surely, 2^{20123212230111} is an apocalyptic number.

20123212230111 is a deficient number, since it is larger than the sum of its proper divisors (6708132017233).

20123212230111 is an equidigital number, since it uses as much as digits as its factorization.

20123212230111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98651801.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20123212230111 its reverse (11103221232102), we get a palindrome (31226433462213).

The spelling of 20123212230111 in words is "twenty trillion, one hundred twenty-three billion, two hundred twelve million, two hundred thirty thousand, one hundred eleven".