2121003213331 has 16 divisors (see below), whose sum is σ = 2272911580800. Its totient is φ = 1975468633600.

The previous prime is 2121003213323. The next prime is 2121003213353. The reversal of 2121003213331 is 1333123001212.

It is a cyclic number.

It is not a de Polignac number, because 2121003213331 - 2³ = 2121003213323 is a prime.

It is a super-2 number, since 2×2121003213331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121003219331) 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, 9915835 + ... + 10127476.

It is an arithmetic number, because the mean of its divisors is an integer number (142056973800).

Almost surely, 2^{2121003213331} is an apocalyptic number.

2121003213331 is a deficient number, since it is larger than the sum of its proper divisors (151908367469).

2121003213331 is a wasteful number, since it uses less digits than its factorization.

2121003213331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20043470.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 2121003213331 its reverse (1333123001212), we get a palindrome (3454126214543).

The spelling of 2121003213331 in words is "two trillion, one hundred twenty-one billion, three million, two hundred thirteen thousand, three hundred thirty-one".