6221520422 has 16 divisors (see below), whose sum is σ = 10116712032. Its totient is φ = 2852452800.

The previous prime is 6221520419. The next prime is 6221520443. The reversal of 6221520422 is 2240251226.

It is a super-2 number, since 2×6221520422² = 77414632722726116168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 6221520391 and 6221520400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788423 + ... + 796274.

It is an arithmetic number, because the mean of its divisors is an integer number (632294502).

Almost surely, 2^6221520422 is an apocalyptic number.

6221520422 is a deficient number, since it is larger than the sum of its proper divisors (3895191610).

6221520422 is a wasteful number, since it uses less digits than its factorization.

6221520422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584863.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 6221520422 is about 78876.6151783911. The cubic root of 6221520422 is about 1839.2136311684.

Adding to 6221520422 its reverse (2240251226), we get a palindrome (8461771648).

The spelling of 6221520422 in words is "six billion, two hundred twenty-one million, five hundred twenty thousand, four hundred twenty-two".