21422213245 has 8 divisors (see below), whose sum is σ = 25707446784. Its totient is φ = 17137243344.

The previous prime is 21422213231. The next prime is 21422213249. The reversal of 21422213245 is 54231222412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21422213245 - 2¹⁹ = 21421688957 is a prime.

It is a super-2 number, since 2×21422213245² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422213249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254232 + ... + 327838.

It is an arithmetic number, because the mean of its divisors is an integer number (3213430848).

Almost surely, 2^21422213245 is an apocalyptic number.

It is an amenable number.

21422213245 is a deficient number, since it is larger than the sum of its proper divisors (4285233539).

21422213245 is an equidigital number, since it uses as much as digits as its factorization.

21422213245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131819.

The product of its digits is 7680, while the sum is 28.

Adding to 21422213245 its reverse (54231222412), we get a palindrome (75653435657).

The spelling of 21422213245 in words is "twenty-one billion, four hundred twenty-two million, two hundred thirteen thousand, two hundred forty-five".