1022020913 has 2 divisors, whose sum is σ = 1022020914. Its totient is φ = 1022020912.

The previous prime is 1022020877. The next prime is 1022020933. The reversal of 1022020913 is 3190202201.

It is an a-pointer prime, because the next prime (1022020933) can be obtained adding 1022020913 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 785568784 + 236452129 = 28028^2 + 15377^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022020913 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1022020933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511010456 + 511010457.

It is an arithmetic number, because the mean of its divisors is an integer number (511010457).

Almost surely, 2^1022020913 is an apocalyptic number.

It is an amenable number.

1022020913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022020913 is an equidigital number, since it uses as much as digits as its factorization.

1022020913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1022020913 is about 31969.0618098186. The cubic root of 1022020913 is about 1007.2870739026.

The spelling of 1022020913 in words is "one billion, twenty-two million, twenty thousand, nine hundred thirteen".