20121112201201 has 12 divisors (see below), whose sum is σ = 22119049456756. Its totient is φ = 18289889687520.

The previous prime is 20121112201159. The next prime is 20121112201207. The reversal of 20121112201201 is 10210221112102.

It can be written as a sum of positive squares in 2 ways, for example, as 10254571580176 + 9866540621025 = 3202276^2 + 3141105^2 .

It is not a de Polignac number, because 20121112201201 - 2²⁵ = 20121078646769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121112201207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8134446 + ... + 10315591.

Almost surely, 2^{20121112201201} is an apocalyptic number.

It is an amenable number.

20121112201201 is a deficient number, since it is larger than the sum of its proper divisors (1997937255555).

20121112201201 is a wasteful number, since it uses less digits than its factorization.

20121112201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18459072 (or 18459061 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20121112201201 its reverse (10210221112102), we get a palindrome (30331333313303).

The spelling of 20121112201201 in words is "twenty trillion, one hundred twenty-one billion, one hundred twelve million, two hundred one thousand, two hundred one".