12201021001121 has 16 divisors (see below), whose sum is σ = 13604192222400. Its totient is φ = 10874504107008.

The previous prime is 12201021001109. The next prime is 12201021001153. The reversal of 12201021001121 is 12110012010221.

It is a cyclic number.

It is not a de Polignac number, because 12201021001121 - 2³⁴ = 12183841131937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201021001096 and 12201021001105.

It is not an unprimeable number, because it can be changed into a prime (12201021001171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6886520 + ... + 8475033.

It is an arithmetic number, because the mean of its divisors is an integer number (850262013900).

Almost surely, 2^{12201021001121} is an apocalyptic number.

It is an amenable number.

12201021001121 is a deficient number, since it is larger than the sum of its proper divisors (1403171221279).

12201021001121 is a wasteful number, since it uses less digits than its factorization.

12201021001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15364048.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12201021001121 its reverse (12110012010221), we get a palindrome (24311033011342).

The spelling of 12201021001121 in words is "twelve trillion, two hundred one billion, twenty-one million, one thousand, one hundred twenty-one".