122221457 has 8 divisors (see below), whose sum is σ = 126584640. Its totient is φ = 117868240.

The previous prime is 122221427. The next prime is 122221469. The reversal of 122221457 is 754122221.

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 122221457 - 2⁸ = 122221201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122221417) 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, 29708 + ... + 33570.

It is an arithmetic number, because the mean of its divisors is an integer number (15823080).

Almost surely, 2^122221457 is an apocalyptic number.

It is an amenable number.

122221457 is a deficient number, since it is larger than the sum of its proper divisors (4363183).

122221457 is a wasteful number, since it uses less digits than its factorization.

122221457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4983.

The product of its digits is 2240, while the sum is 26.

The square root of 122221457 is about 11055.3813593200. The cubic root of 122221457 is about 496.2674819518.

Adding to 122221457 its reverse (754122221), we get a palindrome (876343678).

The spelling of 122221457 in words is "one hundred twenty-two million, two hundred twenty-one thousand, four hundred fifty-seven".