100473221 has 2 divisors, whose sum is σ = 100473222. Its totient is φ = 100473220.

The previous prime is 100473203. The next prime is 100473229. The reversal of 100473221 is 122374001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93508900 + 6964321 = 9670^2 + 2639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100473221 is a prime.

It is a super-2 number, since 2×100473221² = 20189736276229682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100473193 and 100473202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100473229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50236610 + 50236611.

It is an arithmetic number, because the mean of its divisors is an integer number (50236611).

Almost surely, 2^100473221 is an apocalyptic number.

It is an amenable number.

100473221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100473221 is an equidigital number, since it uses as much as digits as its factorization.

100473221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 100473221 is about 10023.6331237730. The cubic root of 100473221 is about 464.8898972371.

The spelling of 100473221 in words is "one hundred million, four hundred seventy-three thousand, two hundred twenty-one".