1421022213 has 24 divisors (see below), whose sum is σ = 2211987960. Its totient is φ = 873878400.

The previous prime is 1421022151. The next prime is 1421022241. The reversal of 1421022213 is 3122201241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 230979204 + 1190043009 = 15198^2 + 34497^2 .

It is not a de Polignac number, because 1421022213 - 2²⁴ = 1404244997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421022263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219223 + ... + 225611.

It is an arithmetic number, because the mean of its divisors is an integer number (92166165).

Almost surely, 2^1421022213 is an apocalyptic number.

1421022213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1421022213 is a deficient number, since it is larger than the sum of its proper divisors (790965747).

1421022213 is a wasteful number, since it uses less digits than its factorization.

1421022213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8309 (or 8306 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1421022213 is about 37696.4482809720. The cubic root of 1421022213 is about 1124.2605083899.

Adding to 1421022213 its reverse (3122201241), we get a palindrome (4543223454).

The spelling of 1421022213 in words is "one billion, four hundred twenty-one million, twenty-two thousand, two hundred thirteen".