100220015 has 32 divisors (see below), whose sum is σ = 146240640. Its totient is φ = 64364544.

The previous prime is 100220009. The next prime is 100220023. The reversal of 100220015 is 510022001.

100220015 = 301² + 302² + ... + 689².

It is a cyclic number.

It is not a de Polignac number, because 100220015 - 2⁸ = 100219759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100219978 and 100220005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231239 + ... + 231671.

It is an arithmetic number, because the mean of its divisors is an integer number (4570020).

Almost surely, 2^100220015 is an apocalyptic number.

100220015 is a deficient number, since it is larger than the sum of its proper divisors (46020625).

100220015 is a wasteful number, since it uses less digits than its factorization.

100220015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 100220015 is about 10010.9947058222. The cubic root of 100220015 is about 464.4990404067.

Adding to 100220015 its reverse (510022001), we get a palindrome (610242016).

The spelling of 100220015 in words is "one hundred million, two hundred twenty thousand, fifteen".