1287081122 has 16 divisors (see below), whose sum is σ = 1961419200. Its totient is φ = 633294288.

The previous prime is 1287081121. The next prime is 1287081209. The reversal of 1287081122 is 2211807821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1287081121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145379 + ... + 153977.

It is an arithmetic number, because the mean of its divisors is an integer number (122588700).

Almost surely, 2^1287081122 is an apocalyptic number.

1287081122 is a deficient number, since it is larger than the sum of its proper divisors (674338078).

1287081122 is a wasteful number, since it uses less digits than its factorization.

1287081122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9785.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 1287081122 is about 35875.9128385606. The cubic root of 1287081122 is about 1087.7655660418.

Adding to 1287081122 its reverse (2211807821), we get a palindrome (3498888943).

The spelling of 1287081122 in words is "one billion, two hundred eighty-seven million, eighty-one thousand, one hundred twenty-two".