100122047 has 2 divisors, whose sum is σ = 100122048. Its totient is φ = 100122046.

The previous prime is 100122023. The next prime is 100122049. The reversal of 100122047 is 740221001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100122047 - 2¹⁰ = 100121023 is a prime.

Together with 100122049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100122049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50061023 + 50061024.

It is an arithmetic number, because the mean of its divisors is an integer number (50061024).

Almost surely, 2^100122047 is an apocalyptic number.

100122047 is a deficient number, since it is larger than the sum of its proper divisors (1).

100122047 is an equidigital number, since it uses as much as digits as its factorization.

100122047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 100122047 is about 10006.1004892016. The cubic root of 100122047 is about 464.3476372567.

Adding to 100122047 its reverse (740221001), we get a palindrome (840343048).

The spelling of 100122047 in words is "one hundred million, one hundred twenty-two thousand, forty-seven".