5421224421 has 12 divisors (see below), whose sum is σ = 7831849740. Its totient is φ = 3613599360.

The previous prime is 5421224411. The next prime is 5421224429. The reversal of 5421224421 is 1244221245.

It is a happy number.

5421224421 is a `hidden beast` number, since 5 + 4 + 212 + 2 + 442 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2038522500 + 3382701921 = 45150^2 + 58161^2 .

It is not a de Polignac number, because 5421224421 - 2²¹ = 5419127269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5421224429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21795 + ... + 106383.

It is an arithmetic number, because the mean of its divisors is an integer number (652654145).

Almost surely, 2^5421224421 is an apocalyptic number.

It is an amenable number.

5421224421 is a deficient number, since it is larger than the sum of its proper divisors (2410625319).

5421224421 is a wasteful number, since it uses less digits than its factorization.

5421224421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91716 (or 91713 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 5421224421 is about 73628.9645520022. The cubic root of 5421224421 is about 1756.7061781843.

Adding to 5421224421 its reverse (1244221245), we get a palindrome (6665445666).

The spelling of 5421224421 in words is "five billion, four hundred twenty-one million, two hundred twenty-four thousand, four hundred twenty-one".