6981120001 has 2 divisors, whose sum is σ = 6981120002. Its totient is φ = 6981120000.

The previous prime is 6981119963. The next prime is 6981120031. The reversal of 6981120001 is 1000211896.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4224870001 + 2756250000 = 64999^2 + 52500^2 .

It is a cyclic number.

It is not a de Polignac number, because 6981120001 - 2⁹ = 6981119489 is a prime.

It is not a weakly prime, because it can be changed into another prime (6981120031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3490560000 + 3490560001.

It is an arithmetic number, because the mean of its divisors is an integer number (3490560001).

Almost surely, 2^6981120001 is an apocalyptic number.

It is an amenable number.

6981120001 is a deficient number, since it is larger than the sum of its proper divisors (1).

6981120001 is an equidigital number, since it uses as much as digits as its factorization.

6981120001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 6981120001 is about 83553.0968965244. The cubic root of 6981120001 is about 1911.2098181207.

Adding to 6981120001 its reverse (1000211896), we get a palindrome (7981331897).

The spelling of 6981120001 in words is "six billion, nine hundred eighty-one million, one hundred twenty thousand, one".