2002102811381 has 2 divisors, whose sum is σ = 2002102811382. Its totient is φ = 2002102811380.

The previous prime is 2002102811329. The next prime is 2002102811411. The reversal of 2002102811381 is 1831182012002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1468422886225 + 533679925156 = 1211785^2 + 730534^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002102811381 - 2³⁸ = 1727224904437 is a prime.

It is a super-2 number, since 2×2002102811381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002102811281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001051405690 + 1001051405691.

It is an arithmetic number, because the mean of its divisors is an integer number (1001051405691).

Almost surely, 2^{2002102811381} is an apocalyptic number.

It is an amenable number.

2002102811381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002102811381 is an equidigital number, since it uses as much as digits as its factorization.

2002102811381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 29.

Adding to 2002102811381 its reverse (1831182012002), we get a palindrome (3833284823383).

The spelling of 2002102811381 in words is "two trillion, two billion, one hundred two million, eight hundred eleven thousand, three hundred eighty-one".