1122020999989 has 2 divisors, whose sum is σ = 1122020999990. Its totient is φ = 1122020999988.

The previous prime is 1122020999969. The next prime is 1122021000007. The reversal of 1122020999989 is 9899990202211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 755491256100 + 366529743889 = 869190^2 + 605417^2 .

It is an emirp because it is prime and its reverse (9899990202211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1122020999989 - 2³⁷ = 984582046517 is a prime.

It is a super-2 number, since 2×1122020999989² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122020999909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561010499994 + 561010499995.

It is an arithmetic number, because the mean of its divisors is an integer number (561010499995).

Almost surely, 2^{1122020999989} is an apocalyptic number.

It is an amenable number.

1122020999989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122020999989 is an equidigital number, since it uses as much as digits as its factorization.

1122020999989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3779136, while the sum is 61.

The spelling of 1122020999989 in words is "one trillion, one hundred twenty-two billion, twenty million, nine hundred ninety-nine thousand, nine hundred eighty-nine".