1202100989 has 2 divisors, whose sum is σ = 1202100990. Its totient is φ = 1202100988.

The previous prime is 1202100983. The next prime is 1202101007. The reversal of 1202100989 is 9890012021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1177519225 + 24581764 = 34315^2 + 4958^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202100989 - 2²⁴ = 1185323773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202100983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601050494 + 601050495.

It is an arithmetic number, because the mean of its divisors is an integer number (601050495).

Almost surely, 2^1202100989 is an apocalyptic number.

It is an amenable number.

1202100989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202100989 is an equidigital number, since it uses as much as digits as its factorization.

1202100989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1202100989 is about 34671.3280535949. The cubic root of 1202100989 is about 1063.2783836958.

The spelling of 1202100989 in words is "one billion, two hundred two million, one hundred thousand, nine hundred eighty-nine".