101261969 has 2 divisors, whose sum is σ = 101261970. Its totient is φ = 101261968.

The previous prime is 101261873. The next prime is 101261971. The reversal of 101261969 is 969162101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75047569 + 26214400 = 8663^2 + 5120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101261969 is a prime.

It is a super-2 number, since 2×101261969² = 20507972731513922, which contains 22 as substring.

Together with 101261971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101261989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50630984 + 50630985.

It is an arithmetic number, because the mean of its divisors is an integer number (50630985).

Almost surely, 2^101261969 is an apocalyptic number.

It is an amenable number.

101261969 is a deficient number, since it is larger than the sum of its proper divisors (1).

101261969 is an equidigital number, since it uses as much as digits as its factorization.

101261969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 101261969 is about 10062.9006255652. The cubic root of 101261969 is about 466.1032408316.

The spelling of 101261969 in words is "one hundred one million, two hundred sixty-one thousand, nine hundred sixty-nine".