100219161 has 12 divisors (see below), whose sum is σ = 155442192. Its totient is φ = 57268008.

The previous prime is 100219121. The next prime is 100219193. The reversal of 100219161 is 161912001.

It is not a de Polignac number, because 100219161 - 2¹⁰ = 100218137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100219121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340735 + ... + 341028.

It is an arithmetic number, because the mean of its divisors is an integer number (12953516).

Almost surely, 2^100219161 is an apocalyptic number.

It is an amenable number.

100219161 is a deficient number, since it is larger than the sum of its proper divisors (55223031).

100219161 is an equidigital number, since it uses as much as digits as its factorization.

100219161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681780 (or 681773 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 100219161 is about 10010.9520526272. The cubic root of 100219161 is about 464.4977210318.

The spelling of 100219161 in words is "one hundred million, two hundred nineteen thousand, one hundred sixty-one".