2001221102297 has 2 divisors, whose sum is σ = 2001221102298. Its totient is φ = 2001221102296.

The previous prime is 2001221102159. The next prime is 2001221102311. The reversal of 2001221102297 is 7922011221002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1322548300441 + 678672801856 = 1150021^2 + 823816^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001221102297 - 2²² = 2001216907993 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001221902297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000610551148 + 1000610551149.

It is an arithmetic number, because the mean of its divisors is an integer number (1000610551149).

Almost surely, 2^{2001221102297} is an apocalyptic number.

It is an amenable number.

2001221102297 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001221102297 is an equidigital number, since it uses as much as digits as its factorization.

2001221102297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

Adding to 2001221102297 its reverse (7922011221002), we get a palindrome (9923232323299).

The spelling of 2001221102297 in words is "two trillion, one billion, two hundred twenty-one million, one hundred two thousand, two hundred ninety-seven".