122555240244421 has 8 divisors (see below), whose sum is σ = 126781442983800. Its totient is φ = 118329048169920.

The previous prime is 122555240244391. The next prime is 122555240244461. The reversal of 122555240244421 is 124442042555221.

It can be written as a sum of positive squares in 4 ways, for example, as 157283628100 + 122397956616321 = 396590^2 + 11063361^2 .

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 122555240244421 - 2¹⁵ = 122555240211653 is a prime.

It is a super-2 number, since 2×122555240244421² (a number of 29 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 (122555240244461) 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, 25901035 + ... + 30265063.

It is an arithmetic number, because the mean of its divisors is an integer number (15847680372975).

Almost surely, 2^{122555240244421} is an apocalyptic number.

It is an amenable number.

122555240244421 is a deficient number, since it is larger than the sum of its proper divisors (4226202739379).

122555240244421 is an equidigital number, since it uses as much as digits as its factorization.

122555240244421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5332439.

The product of its (nonzero) digits is 1024000, while the sum is 43.

Adding to 122555240244421 its reverse (124442042555221), we get a palindrome (246997282799642).

The spelling of 122555240244421 in words is "one hundred twenty-two trillion, five hundred fifty-five billion, two hundred forty million, two hundred forty-four thousand, four hundred twenty-one".