100421211 has 16 divisors (see below), whose sum is σ = 149466240. Its totient is φ = 59445120.

The previous prime is 100421201. The next prime is 100421221. The reversal of 100421211 is 112124001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (100421201) and next prime (100421221).

It is not a de Polignac number, because 100421211 - 2⁶ = 100421147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100421201) 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 15 ways as a sum of consecutive naturals, for example, 33966 + ... + 36803.

It is an arithmetic number, because the mean of its divisors is an integer number (9341640).

Almost surely, 2^100421211 is an apocalyptic number.

100421211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100421211 is a deficient number, since it is larger than the sum of its proper divisors (49045029).

100421211 is a wasteful number, since it uses less digits than its factorization.

100421211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70826.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 100421211 is about 10021.0384192458. The cubic root of 100421211 is about 464.8096665826.

Adding to 100421211 its reverse (112124001), we get a palindrome (212545212).

The spelling of 100421211 in words is "one hundred million, four hundred twenty-one thousand, two hundred eleven".