20120210111 has 8 divisors (see below), whose sum is σ = 20427408000. Its totient is φ = 19813673880.

The previous prime is 20120210069. The next prime is 20120210137. The reversal of 20120210111 is 11101202102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120210111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20120210092 and 20120210101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120213111) 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, 103961 + ... + 225938.

It is an arithmetic number, because the mean of its divisors is an integer number (2553426000).

Almost surely, 2^20120210111 is an apocalyptic number.

20120210111 is a deficient number, since it is larger than the sum of its proper divisors (307197889).

20120210111 is an equidigital number, since it uses as much as digits as its factorization.

20120210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330829.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20120210111 its reverse (11101202102), we get a palindrome (31221412213).

The spelling of 20120210111 in words is "twenty billion, one hundred twenty million, two hundred ten thousand, one hundred eleven".