2121233313197 has 2 divisors, whose sum is σ = 2121233313198. Its totient is φ = 2121233313196.

The previous prime is 2121233313113. The next prime is 2121233313253. The reversal of 2121233313197 is 7913133321212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1690452430276 + 430780882921 = 1300174^2 + 656339^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121233313197 - 2¹² = 2121233309101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121233313197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121233312197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060616656598 + 1060616656599.

It is an arithmetic number, because the mean of its divisors is an integer number (1060616656599).

Almost surely, 2^{2121233313197} is an apocalyptic number.

It is an amenable number.

2121233313197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121233313197 is an equidigital number, since it uses as much as digits as its factorization.

2121233313197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 38.

The spelling of 2121233313197 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-three million, three hundred thirteen thousand, one hundred ninety-seven".