421131101 has 2 divisors, whose sum is σ = 421131102. Its totient is φ = 421131100.

The previous prime is 421131091. The next prime is 421131149. The reversal of 421131101 is 101131124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227225476 + 193905625 = 15074^2 + 13925^2 .

It is a cyclic number.

It is not a de Polignac number, because 421131101 - 2¹⁴ = 421114717 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421133101) 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 as a sum of consecutive naturals, namely, 210565550 + 210565551.

It is an arithmetic number, because the mean of its divisors is an integer number (210565551).

Almost surely, 2^421131101 is an apocalyptic number.

It is an amenable number.

421131101 is a deficient number, since it is larger than the sum of its proper divisors (1).

421131101 is an equidigital number, since it uses as much as digits as its factorization.

421131101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 421131101 is about 20521.4790158994. The cubic root of 421131101 is about 749.5589116019.

Adding to 421131101 its reverse (101131124), we get a palindrome (522262225).

The spelling of 421131101 in words is "four hundred twenty-one million, one hundred thirty-one thousand, one hundred one".