101032111981 has 2 divisors, whose sum is σ = 101032111982. Its totient is φ = 101032111980.

The previous prime is 101032111969. The next prime is 101032112033. The reversal of 101032111981 is 189111230101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70684729956 + 30347382025 = 265866^2 + 174205^2 .

It is a cyclic number.

It is not a de Polignac number, because 101032111981 - 2³³ = 92442177389 is a prime.

It is a super-2 number, since 2×101032111981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101032111951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50516055990 + 50516055991.

It is an arithmetic number, because the mean of its divisors is an integer number (50516055991).

Almost surely, 2^101032111981 is an apocalyptic number.

It is an amenable number.

101032111981 is a deficient number, since it is larger than the sum of its proper divisors (1).

101032111981 is an equidigital number, since it uses as much as digits as its factorization.

101032111981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 28.

The spelling of 101032111981 in words is "one hundred one billion, thirty-two million, one hundred eleven thousand, nine hundred eighty-one".