2020121211929 has 2 divisors, whose sum is σ = 2020121211930. Its totient is φ = 2020121211928.

The previous prime is 2020121211917. The next prime is 2020121211937. The reversal of 2020121211929 is 9291121210202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1663718181904 + 356403030025 = 1289852^2 + 596995^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020121211929 - 2²⁰ = 2020120163353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2020121211895 and 2020121211904.

It is not a weakly prime, because it can be changed into another prime (2020121211949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010060605964 + 1010060605965.

It is an arithmetic number, because the mean of its divisors is an integer number (1010060605965).

Almost surely, 2^{2020121211929} is an apocalyptic number.

It is an amenable number.

2020121211929 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020121211929 is an equidigital number, since it uses as much as digits as its factorization.

2020121211929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 2020121211929 in words is "two trillion, twenty billion, one hundred twenty-one million, two hundred eleven thousand, nine hundred twenty-nine".