12201000020121 has 64 divisors (see below), whose sum is σ = 18102378700800. Its totient is φ = 7247737981440.

The previous prime is 12201000019987. The next prime is 12201000020173. The reversal of 12201000020121 is 12102000010221.

It is not a de Polignac number, because 12201000020121 - 2¹⁰ = 12201000019097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12201000020097 and 12201000020106.

It is not an unprimeable number, because it can be changed into a prime (12201000000121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1124821720 + ... + 1124832566.

It is an arithmetic number, because the mean of its divisors is an integer number (282849667200).

Almost surely, 2^{12201000020121} is an apocalyptic number.

12201000020121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12201000020121 is a deficient number, since it is larger than the sum of its proper divisors (5901378680679).

12201000020121 is a wasteful number, since it uses less digits than its factorization.

12201000020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13806.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12201000020121 its reverse (12102000010221), we get a palindrome (24303000030342).

The spelling of 12201000020121 in words is "twelve trillion, two hundred one billion, twenty thousand, one hundred twenty-one".