2121233313253 has 2 divisors, whose sum is σ = 2121233313254. Its totient is φ = 2121233313252.

The previous prime is 2121233313197. The next prime is 2121233313259. The reversal of 2121233313253 is 3523133321212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1917898153924 + 203335159329 = 1384882^2 + 450927^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121233313253 - 2⁹ = 2121233312741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121233313259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060616656626 + 1060616656627.

It is an arithmetic number, because the mean of its divisors is an integer number (1060616656627).

Almost surely, 2^{2121233313253} is an apocalyptic number.

It is an amenable number.

2121233313253 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121233313253 is an equidigital number, since it uses as much as digits as its factorization.

2121233313253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 31.

Adding to 2121233313253 its reverse (3523133321212), we get a palindrome (5644366634465).

The spelling of 2121233313253 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-three million, three hundred thirteen thousand, two hundred fifty-three".