1020001202117 has 2 divisors, whose sum is σ = 1020001202118. Its totient is φ = 1020001202116.

The previous prime is 1020001202089. The next prime is 1020001202123. The reversal of 1020001202117 is 7112021000201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1003040307361 + 16960894756 = 1001519^2 + 130234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020001202117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020001202095 and 1020001202104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020001202137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510000601058 + 510000601059.

It is an arithmetic number, because the mean of its divisors is an integer number (510000601059).

Almost surely, 2^{1020001202117} is an apocalyptic number.

It is an amenable number.

1020001202117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020001202117 is an equidigital number, since it uses as much as digits as its factorization.

1020001202117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 1020001202117 its reverse (7112021000201), we get a palindrome (8132022202318).

The spelling of 1020001202117 in words is "one trillion, twenty billion, one million, two hundred two thousand, one hundred seventeen".