2130112381 has 2 divisors, whose sum is σ = 2130112382. Its totient is φ = 2130112380.

The previous prime is 2130112373. The next prime is 2130112399. The reversal of 2130112381 is 1832110312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1602721156 + 527391225 = 40034^2 + 22965^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130112381 - 2³ = 2130112373 is a prime.

It is a super-2 number, since 2×2130112381² = 9074757511378978322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100112381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065056190 + 1065056191.

It is an arithmetic number, because the mean of its divisors is an integer number (1065056191).

Almost surely, 2^2130112381 is an apocalyptic number.

It is an amenable number.

2130112381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130112381 is an equidigital number, since it uses as much as digits as its factorization.

2130112381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 2130112381 is about 46153.1405323625. The cubic root of 2130112381 is about 1286.6709791244.

Adding to 2130112381 its reverse (1832110312), we get a palindrome (3962222693).

The spelling of 2130112381 in words is "two billion, one hundred thirty million, one hundred twelve thousand, three hundred eighty-one".