1011200021329 has 2 divisors, whose sum is σ = 1011200021330. Its totient is φ = 1011200021328.

The previous prime is 1011200021317. The next prime is 1011200021371. The reversal of 1011200021329 is 9231200021101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1004034060225 + 7165961104 = 1002015^2 + 84652^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011200021329 - 2⁷ = 1011200021201 is a prime.

It is a super-3 number, since 3×1011200021329³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1011200021389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505600010664 + 505600010665.

It is an arithmetic number, because the mean of its divisors is an integer number (505600010665).

Almost surely, 2^{1011200021329} is an apocalyptic number.

It is an amenable number.

1011200021329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011200021329 is an equidigital number, since it uses as much as digits as its factorization.

1011200021329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 1011200021329 in words is "one trillion, eleven billion, two hundred million, twenty-one thousand, three hundred twenty-nine".