100421011 has 2 divisors, whose sum is σ = 100421012. Its totient is φ = 100421010.

The previous prime is 100420987. The next prime is 100421017. The reversal of 100421011 is 110124001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100421011 - 2⁵ = 100420979 is a prime.

It is not a weakly prime, because it can be changed into another prime (100421017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50210505 + 50210506.

It is an arithmetic number, because the mean of its divisors is an integer number (50210506).

Almost surely, 2^100421011 is an apocalyptic number.

100421011 is a deficient number, since it is larger than the sum of its proper divisors (1).

100421011 is an equidigital number, since it uses as much as digits as its factorization.

100421011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 100421011 is about 10021.0284402351. The cubic root of 100421011 is about 464.8093580091.

Adding to 100421011 its reverse (110124001), we get a palindrome (210545012).

The spelling of 100421011 in words is "one hundred million, four hundred twenty-one thousand, eleven".