12201011001121 has 4 divisors (see below), whose sum is σ = 12201985768852. Its totient is φ = 12200036233392.

The previous prime is 12201011001043. The next prime is 12201011001139. The reversal of 12201011001121 is 12110011010221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5635686081600 + 6565324919521 = 2373960^2 + 2562289^2 .

It is a cyclic number.

It is not a de Polignac number, because 12201011001121 - 2³¹ = 12198863517473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12201011001821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487365090 + ... + 487390123.

It is an arithmetic number, because the mean of its divisors is an integer number (3050496442213).

Almost surely, 2^{12201011001121} is an apocalyptic number.

It is an amenable number.

12201011001121 is a deficient number, since it is larger than the sum of its proper divisors (974767731).

12201011001121 is an equidigital number, since it uses as much as digits as its factorization.

12201011001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974767730.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12201011001121 its reverse (12110011010221), we get a palindrome (24311022011342).

It can be divided in two parts, 1220101 and 1001121, that added together give a palindrome (2221222).

The spelling of 12201011001121 in words is "twelve trillion, two hundred one billion, eleven million, one thousand, one hundred twenty-one".