101002981 has 2 divisors, whose sum is σ = 101002982. Its totient is φ = 101002980.

The previous prime is 101002939. The next prime is 101003009. The reversal of 101002981 is 189200101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54626881 + 46376100 = 7391^2 + 6810^2 .

It is a cyclic number.

It is not a de Polignac number, because 101002981 - 2⁹ = 101002469 is a prime.

It is a super-2 number, since 2×101002981² = 20403204341772722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101002381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50501490 + 50501491.

It is an arithmetic number, because the mean of its divisors is an integer number (50501491).

Almost surely, 2^101002981 is an apocalyptic number.

It is an amenable number.

101002981 is a deficient number, since it is larger than the sum of its proper divisors (1).

101002981 is an equidigital number, since it uses as much as digits as its factorization.

101002981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 101002981 is about 10050.0239303198. The cubic root of 101002981 is about 465.7055324334.

The spelling of 101002981 in words is "one hundred one million, two thousand, nine hundred eighty-one".