1214344021 has 6 divisors (see below), whose sum is σ = 1334774966. Its totient is φ = 1103949000.

The previous prime is 1214343989. The next prime is 1214344063. The reversal of 1214344021 is 1204434121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1121915025 + 92428996 = 33495^2 + 9614^2 .

It is not a de Polignac number, because 1214344021 - 2⁵ = 1214343989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1214343983 and 1214344001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214344721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5017830 + ... + 5018071.

Almost surely, 2^1214344021 is an apocalyptic number.

1214344021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1214344021 is a deficient number, since it is larger than the sum of its proper divisors (120430945).

1214344021 is a wasteful number, since it uses less digits than its factorization.

1214344021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10035923 (or 10035912 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1214344021 is about 34847.4392315992. The cubic root of 1214344021 is about 1066.8759199605.

Adding to 1214344021 its reverse (1204434121), we get a palindrome (2418778142).

The spelling of 1214344021 in words is "one billion, two hundred fourteen million, three hundred forty-four thousand, twenty-one".