20001120222111 has 8 divisors (see below), whose sum is σ = 30477897481344. Its totient is φ = 11429211555480.

The previous prime is 20001120222049. The next prime is 20001120222199. The reversal of 20001120222111 is 11122202110002.

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

It is not a de Polignac number, because 20001120222111 - 2⁶ = 20001120222047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001120222911) 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, 476217148125 + ... + 476217148166.

It is an arithmetic number, because the mean of its divisors is an integer number (3809737185168).

Almost surely, 2^{20001120222111} is an apocalyptic number.

20001120222111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20001120222111 is a deficient number, since it is larger than the sum of its proper divisors (10476777259233).

20001120222111 is an equidigital number, since it uses as much as digits as its factorization.

20001120222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952434296301.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20001120222111 its reverse (11122202110002), we get a palindrome (31123322332113).

The spelling of 20001120222111 in words is "twenty trillion, one billion, one hundred twenty million, two hundred twenty-two thousand, one hundred eleven".