10101032231981 has 2 divisors, whose sum is σ = 10101032231982. Its totient is φ = 10101032231980.

The previous prime is 10101032231971. The next prime is 10101032232023. The reversal of 10101032231981 is 18913223010101.

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., 5853331841956 + 4247700390025 = 2419366^2 + 2060995^2 .

It is a cyclic number.

It is not a de Polignac number, because 10101032231981 - 2⁴² = 5702985720877 is a prime.

It is a super-2 number, since 2×10101032231981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10101032231971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050516115990 + 5050516115991.

It is an arithmetic number, because the mean of its divisors is an integer number (5050516115991).

Almost surely, 2^{10101032231981} is an apocalyptic number.

It is an amenable number.

10101032231981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101032231981 is an equidigital number, since it uses as much as digits as its factorization.

10101032231981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 10101032231981 in words is "ten trillion, one hundred one billion, thirty-two million, two hundred thirty-one thousand, nine hundred eighty-one".