100122221273 has 2 divisors, whose sum is σ = 100122221274. Its totient is φ = 100122221272.

The previous prime is 100122221209. The next prime is 100122221279. The reversal of 100122221273 is 372122221001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98189475904 + 1932745369 = 313352^2 + 43963^2 .

It is an emirp because it is prime and its reverse (372122221001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100122221273 - 2⁶ = 100122221209 is a prime.

It is not a weakly prime, because it can be changed into another prime (100122221279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50061110636 + 50061110637.

It is an arithmetic number, because the mean of its divisors is an integer number (50061110637).

Almost surely, 2^100122221273 is an apocalyptic number.

It is an amenable number.

100122221273 is a deficient number, since it is larger than the sum of its proper divisors (1).

100122221273 is an equidigital number, since it uses as much as digits as its factorization.

100122221273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 100122221273 its reverse (372122221001), we get a palindrome (472244442274).

The spelling of 100122221273 in words is "one hundred billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred seventy-three".