102011300381 has 2 divisors, whose sum is σ = 102011300382. Its totient is φ = 102011300380.

The previous prime is 102011300351. The next prime is 102011300399. The reversal of 102011300381 is 183003110201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67115192356 + 34896108025 = 259066^2 + 186805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102011300381 is a prime.

It is a super-2 number, since 2×102011300381² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102011300341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51005650190 + 51005650191.

It is an arithmetic number, because the mean of its divisors is an integer number (51005650191).

Almost surely, 2^102011300381 is an apocalyptic number.

It is an amenable number.

102011300381 is a deficient number, since it is larger than the sum of its proper divisors (1).

102011300381 is an equidigital number, since it uses as much as digits as its factorization.

102011300381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 102011300381 its reverse (183003110201), we get a palindrome (285014410582).

The spelling of 102011300381 in words is "one hundred two billion, eleven million, three hundred thousand, three hundred eighty-one".