20220520811 has 2 divisors, whose sum is σ = 20220520812. Its totient is φ = 20220520810.

The previous prime is 20220520787. The next prime is 20220520813. The reversal of 20220520811 is 11802502202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20220520811 - 2²⁶ = 20153411947 is a prime.

It is a Sophie Germain prime.

Together with 20220520813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20220520813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110260405 + 10110260406.

It is an arithmetic number, because the mean of its divisors is an integer number (10110260406).

Almost surely, 2^20220520811 is an apocalyptic number.

20220520811 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220520811 is an equidigital number, since it uses as much as digits as its factorization.

20220520811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 23.

The spelling of 20220520811 in words is "twenty billion, two hundred twenty million, five hundred twenty thousand, eight hundred eleven".