2130202381 has 2 divisors, whose sum is σ = 2130202382. Its totient is φ = 2130202380.

The previous prime is 2130202307. The next prime is 2130202409. The reversal of 2130202381 is 1832020312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1691676900 + 438525481 = 41130^2 + 20941^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130202381 - 2⁹ = 2130201869 is a prime.

It is a super-2 number, since 2×2130202381² = 9075524368036138322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130202301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065101190 + 1065101191.

It is an arithmetic number, because the mean of its divisors is an integer number (1065101191).

Almost surely, 2^2130202381 is an apocalyptic number.

It is an amenable number.

2130202381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130202381 is an equidigital number, since it uses as much as digits as its factorization.

2130202381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2130202381 is about 46154.1155369703. The cubic root of 2130202381 is about 1286.6891000396.

Adding to 2130202381 its reverse (1832020312), we get a palindrome (3962222693).

The spelling of 2130202381 in words is "two billion, one hundred thirty million, two hundred two thousand, three hundred eighty-one".