1023773221819 has 2 divisors, whose sum is σ = 1023773221820. Its totient is φ = 1023773221818.

The previous prime is 1023773221777. The next prime is 1023773221883. The reversal of 1023773221819 is 9181223773201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1023773221819 - 2²³ = 1023764833211 is a prime.

It is a super-2 number, since 2×1023773221819² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1023773224819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511886610909 + 511886610910.

It is an arithmetic number, because the mean of its divisors is an integer number (511886610910).

Almost surely, 2^{1023773221819} is an apocalyptic number.

1023773221819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023773221819 is an equidigital number, since it uses as much as digits as its factorization.

1023773221819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 1023773221819 in words is "one trillion, twenty-three billion, seven hundred seventy-three million, two hundred twenty-one thousand, eight hundred nineteen".