1122122001989 has 2 divisors, whose sum is σ = 1122122001990. Its totient is φ = 1122122001988.

The previous prime is 1122122001983. The next prime is 1122122002033. The reversal of 1122122001989 is 9891002212211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1122095304100 + 26697889 = 1059290^2 + 5167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122122001989 is a prime.

It is a super-2 number, since 2×1122122001989² (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 (1122122001983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561061000994 + 561061000995.

It is an arithmetic number, because the mean of its divisors is an integer number (561061000995).

Almost surely, 2^{1122122001989} is an apocalyptic number.

It is an amenable number.

1122122001989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122122001989 is an equidigital number, since it uses as much as digits as its factorization.

1122122001989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 38.

The spelling of 1122122001989 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-two million, one thousand, nine hundred eighty-nine".