1210880999 has 2 divisors, whose sum is σ = 1210881000. Its totient is φ = 1210880998.

The previous prime is 1210880959. The next prime is 1210881011. The reversal of 1210880999 is 9990880121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210880999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210880959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605440499 + 605440500.

It is an arithmetic number, because the mean of its divisors is an integer number (605440500).

Almost surely, 2^1210880999 is an apocalyptic number.

1210880999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210880999 is an equidigital number, since it uses as much as digits as its factorization.

1210880999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 47.

The square root of 1210880999 is about 34797.7154278841. The cubic root of 1210880999 is about 1065.8607951005.

The spelling of 1210880999 in words is "one billion, two hundred ten million, eight hundred eighty thousand, nine hundred ninety-nine".