100226215 has 4 divisors (see below), whose sum is σ = 120271464. Its totient is φ = 80180968.

The previous prime is 100226213. The next prime is 100226257. The reversal of 100226215 is 512622001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512622001 = 1523 ⋅336587.

It is a cyclic number.

It is not a de Polignac number, because 100226215 - 2¹ = 100226213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100226192 and 100226201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100226213) 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, 10022617 + ... + 10022626.

It is an arithmetic number, because the mean of its divisors is an integer number (30067866).

Almost surely, 2^100226215 is an apocalyptic number.

100226215 is a deficient number, since it is larger than the sum of its proper divisors (20045249).

100226215 is an equidigital number, since it uses as much as digits as its factorization.

100226215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20045248.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 100226215 is about 10011.3043605716. The cubic root of 100226215 is about 464.5086187817.

Adding to 100226215 its reverse (512622001), we get a palindrome (612848216).

The spelling of 100226215 in words is "one hundred million, two hundred twenty-six thousand, two hundred fifteen".