61221422 has 8 divisors (see below), whose sum is σ = 93967896. Its totient is φ = 29898792.

The previous prime is 61221389. The next prime is 61221443. The reversal of 61221422 is 22412216.

It is a happy number.

61221422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 61221394 and 61221403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355853 + ... + 356024.

It is an arithmetic number, because the mean of its divisors is an integer number (11745987).

Almost surely, 2^61221422 is an apocalyptic number.

61221422 is a deficient number, since it is larger than the sum of its proper divisors (32746474).

61221422 is a wasteful number, since it uses less digits than its factorization.

61221422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711922.

The product of its digits is 384, while the sum is 20.

The square root of 61221422 is about 7824.4119267840. The cubic root of 61221422 is about 394.1254421191.

Adding to 61221422 its reverse (22412216), we get a palindrome (83633638).

The spelling of 61221422 in words is "sixty-one million, two hundred twenty-one thousand, four hundred twenty-two".