10021120997 has 2 divisors, whose sum is σ = 10021120998. Its totient is φ = 10021120996.

The previous prime is 10021120987. The next prime is 10021121003. The reversal of 10021120997 is 79902112001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7838269156 + 2182851841 = 88534^2 + 46721^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021120997 - 2⁴ = 10021120981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10021120937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010560498 + 5010560499.

It is an arithmetic number, because the mean of its divisors is an integer number (5010560499).

Almost surely, 2^10021120997 is an apocalyptic number.

It is an amenable number.

10021120997 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021120997 is an equidigital number, since it uses as much as digits as its factorization.

10021120997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 32.

Adding to 10021120997 its reverse (79902112001), we get a palindrome (89923232998).

The spelling of 10021120997 in words is "ten billion, twenty-one million, one hundred twenty thousand, nine hundred ninety-seven".