100221059 has 4 divisors (see below), whose sum is σ = 101489760. Its totient is φ = 98952360.

The previous prime is 100221019. The next prime is 100221073. The reversal of 100221059 is 950122001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 950122001 = 37 ⋅25678973.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100221059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100221059.

It is not an unprimeable number, because it can be changed into a prime (100221019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634232 + ... + 634389.

It is an arithmetic number, because the mean of its divisors is an integer number (25372440).

Almost surely, 2^100221059 is an apocalyptic number.

100221059 is a deficient number, since it is larger than the sum of its proper divisors (1268701).

100221059 is an equidigital number, since it uses as much as digits as its factorization.

100221059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268700.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 100221059 is about 10011.0468483571. The cubic root of 100221059 is about 464.5006533091.

The spelling of 100221059 in words is "one hundred million, two hundred twenty-one thousand, fifty-nine".