1421210113 has 4 divisors (see below), whose sum is σ = 1445298480. Its totient is φ = 1397121748.

The previous prime is 1421210093. The next prime is 1421210173. The reversal of 1421210113 is 3110121241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1421210113 - 2¹⁷ = 1421079041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421210173) 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, 12044095 + ... + 12044212.

It is an arithmetic number, because the mean of its divisors is an integer number (361324620).

Almost surely, 2^1421210113 is an apocalyptic number.

It is an amenable number.

1421210113 is a deficient number, since it is larger than the sum of its proper divisors (24088367).

1421210113 is an equidigital number, since it uses as much as digits as its factorization.

1421210113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24088366.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1421210113 is about 37698.9404758277. The cubic root of 1421210113 is about 1124.3100593956.

Adding to 1421210113 its reverse (3110121241), we get a palindrome (4531331354).

The spelling of 1421210113 in words is "one billion, four hundred twenty-one million, two hundred ten thousand, one hundred thirteen".