20214222409 has 4 divisors (see below), whose sum is σ = 20247198916. Its totient is φ = 20181245904.

The previous prime is 20214222397. The next prime is 20214222499. The reversal of 20214222409 is 90422241202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10427473225 + 9786749184 = 102115^2 + 98928^2 .

It is a cyclic number.

It is not a de Polignac number, because 20214222409 - 2¹¹ = 20214220361 is a prime.

It is a super-2 number, since 2×20214222409² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20214222499) 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 in 3 ways as a sum of consecutive naturals, for example, 16487334 + ... + 16488559.

It is an arithmetic number, because the mean of its divisors is an integer number (5061799729).

Almost surely, 2^20214222409 is an apocalyptic number.

It is an amenable number.

20214222409 is a deficient number, since it is larger than the sum of its proper divisors (32976507).

20214222409 is an equidigital number, since it uses as much as digits as its factorization.

20214222409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32976506.

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 20214222409 in words is "twenty billion, two hundred fourteen million, two hundred twenty-two thousand, four hundred nine".