920212021012121 has 2 divisors, whose sum is σ = 920212021012122. Its totient is φ = 920212021012120.

The previous prime is 920212021012117. The next prime is 920212021012127. The reversal of 920212021012121 is 121210120212029.

920212021012121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 683008745038096 + 237203275974025 = 26134436^2 + 15401405^2 .

It is an emirp because it is prime and its reverse (121210120212029) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 920212021012121 - 2² = 920212021012117 is a prime.

It is not a weakly prime, because it can be changed into another prime (920212021012127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460106010506060 + 460106010506061.

It is an arithmetic number, because the mean of its divisors is an integer number (460106010506061).

Almost surely, 2^{920212021012121} is an apocalyptic number.

It is an amenable number.

920212021012121 is a deficient number, since it is larger than the sum of its proper divisors (1).

920212021012121 is an equidigital number, since it uses as much as digits as its factorization.

920212021012121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 920212021012121 in words is "nine hundred twenty trillion, two hundred twelve billion, twenty-one million, twelve thousand, one hundred twenty-one".