2002110121997 has 2 divisors, whose sum is σ = 2002110121998. Its totient is φ = 2002110121996.

The previous prime is 2002110121969. The next prime is 2002110122027. The reversal of 2002110121997 is 7991210112002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1192651831396 + 809458290601 = 1092086^2 + 899699^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002110121997 - 2¹⁸ = 2002109859853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002110121397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001055060998 + 1001055060999.

It is an arithmetic number, because the mean of its divisors is an integer number (1001055060999).

Almost surely, 2^{2002110121997} is an apocalyptic number.

It is an amenable number.

2002110121997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002110121997 is an equidigital number, since it uses as much as digits as its factorization.

2002110121997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 35.

Adding to 2002110121997 its reverse (7991210112002), we get a palindrome (9993320233999).

The spelling of 2002110121997 in words is "two trillion, two billion, one hundred ten million, one hundred twenty-one thousand, nine hundred ninety-seven".