1001112220987 has 8 divisors (see below), whose sum is σ = 1023070902336. Its totient is φ = 979180973952.

The previous prime is 1001112220973. The next prime is 1001112221029. The reversal of 1001112220987 is 7890222111001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001112220987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001112220687) 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, 6784788 + ... + 6930769.

It is an arithmetic number, because the mean of its divisors is an integer number (127883862792).

Almost surely, 2^{1001112220987} is an apocalyptic number.

1001112220987 is a deficient number, since it is larger than the sum of its proper divisors (21958681349).

1001112220987 is a wasteful number, since it uses less digits than its factorization.

1001112220987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13717157.

The product of its (nonzero) digits is 4032, while the sum is 34.

Adding to 1001112220987 its reverse (7890222111001), we get a palindrome (8891334331988).

The spelling of 1001112220987 in words is "one trillion, one billion, one hundred twelve million, two hundred twenty thousand, nine hundred eighty-seven".