203121041212889 has 2 divisors, whose sum is σ = 203121041212890. Its totient is φ = 203121041212888.

The previous prime is 203121041212853. The next prime is 203121041213003. The reversal of 203121041212889 is 988212140121302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196597078030864 + 6523963182025 = 14021308^2 + 2554205^2 .

It is a cyclic number.

It is not a de Polignac number, because 203121041212889 - 2¹² = 203121041208793 is a prime.

It is not a weakly prime, because it can be changed into another prime (203121040212889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101560520606444 + 101560520606445.

It is an arithmetic number, because the mean of its divisors is an integer number (101560520606445).

Almost surely, 2^{203121041212889} is an apocalyptic number.

It is an amenable number.

203121041212889 is a deficient number, since it is larger than the sum of its proper divisors (1).

203121041212889 is an equidigital number, since it uses as much as digits as its factorization.

203121041212889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 44.

The spelling of 203121041212889 in words is "two hundred three trillion, one hundred twenty-one billion, forty-one million, two hundred twelve thousand, eight hundred eighty-nine".