20120011212111 has 8 divisors (see below), whose sum is σ = 26826713508864. Its totient is φ = 13413324861720.

The previous prime is 20120011212073. The next prime is 20120011212121. The reversal of 20120011212111 is 11121211002102.

It is a happy number.

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

It is not a de Polignac number, because 20120011212111 - 2¹⁰ = 20120011211087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120011212121) 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, 641601 + ... + 6375866.

It is an arithmetic number, because the mean of its divisors is an integer number (3353339188608).

Almost surely, 2^{20120011212111} is an apocalyptic number.

20120011212111 is a deficient number, since it is larger than the sum of its proper divisors (6706702296753).

20120011212111 is an equidigital number, since it uses as much as digits as its factorization.

20120011212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7973181.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20120011212111 its reverse (11121211002102), we get a palindrome (31241222214213).

The spelling of 20120011212111 in words is "twenty trillion, one hundred twenty billion, eleven million, two hundred twelve thousand, one hundred eleven".