2121133021201 has 16 divisors (see below), whose sum is σ = 2176555852800. Its totient is φ = 2066425218000.

The previous prime is 2121133021187. The next prime is 2121133021207. The reversal of 2121133021201 is 1021203311212.

It is a cyclic number.

It is not a de Polignac number, because 2121133021201 - 2¹¹ = 2121133019153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121133021207) 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, 3448756 + ... + 4016986.

It is an arithmetic number, because the mean of its divisors is an integer number (136034740800).

Almost surely, 2^{2121133021201} is an apocalyptic number.

It is an amenable number.

2121133021201 is a deficient number, since it is larger than the sum of its proper divisors (55422831599).

2121133021201 is a wasteful number, since it uses less digits than its factorization.

2121133021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568860.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2121133021201 its reverse (1021203311212), we get a palindrome (3142336332413).

The spelling of 2121133021201 in words is "two trillion, one hundred twenty-one billion, one hundred thirty-three million, twenty-one thousand, two hundred one".