100461221 has 6 divisors (see below), whose sum is σ = 116863110. Its totient is φ = 86109576.

The previous prime is 100461197. The next prime is 100461223. The reversal of 100461221 is 122164001.

It can be written as a sum of positive squares in only one way, i.e., 100200100 + 261121 = 10010^2 + 511^2 .

It is a de Polignac number, because none of the positive numbers 2^k-100461221 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 100461221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100461223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1025066 + ... + 1025163.

It is an arithmetic number, because the mean of its divisors is an integer number (19477185).

Almost surely, 2^100461221 is an apocalyptic number.

It is an amenable number.

100461221 is a deficient number, since it is larger than the sum of its proper divisors (16401889).

100461221 is an equidigital number, since it uses as much as digits as its factorization.

100461221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050243 (or 2050236 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 100461221 is about 10023.0345205432. The cubic root of 100461221 is about 464.8713884881.

The spelling of 100461221 in words is "one hundred million, four hundred sixty-one thousand, two hundred twenty-one".