101970161 has 2 divisors, whose sum is σ = 101970162. Its totient is φ = 101970160.

The previous prime is 101970139. The next prime is 101970163. The reversal of 101970161 is 161079101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100801600 + 1168561 = 10040^2 + 1081^2 .

It is a cyclic number.

It is not a de Polignac number, because 101970161 - 2²⁶ = 34861297 is a prime.

Together with 101970163, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101970161.

It is not a weakly prime, because it can be changed into another prime (101970163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50985080 + 50985081.

It is an arithmetic number, because the mean of its divisors is an integer number (50985081).

Almost surely, 2^101970161 is an apocalyptic number.

It is an amenable number.

101970161 is a deficient number, since it is larger than the sum of its proper divisors (1).

101970161 is an equidigital number, since it uses as much as digits as its factorization.

101970161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 26.

The square root of 101970161 is about 10098.0275796811. The cubic root of 101970161 is about 467.1873070793.

The spelling of 101970161 in words is "one hundred one million, nine hundred seventy thousand, one hundred sixty-one".