1022020201009 has 2 divisors, whose sum is σ = 1022020201010. Its totient is φ = 1022020201008.

The previous prime is 1022020201003. The next prime is 1022020201019. The reversal of 1022020201009 is 9001020202201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 957211770384 + 64808430625 = 978372^2 + 254575^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022020201009 - 2⁵ = 1022020200977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022020201003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511010100504 + 511010100505.

It is an arithmetic number, because the mean of its divisors is an integer number (511010100505).

Almost surely, 2^{1022020201009} is an apocalyptic number.

It is an amenable number.

1022020201009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022020201009 is an equidigital number, since it uses as much as digits as its factorization.

1022020201009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 1022020201009 in words is "one trillion, twenty-two billion, twenty million, two hundred one thousand, nine".