104121222421 has 4 divisors (see below), whose sum is σ = 104723079372. Its totient is φ = 103519365472.

The previous prime is 104121222409. The next prime is 104121222427. The reversal of 104121222421 is 124222121401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77253423025 + 26867799396 = 277945^2 + 163914^2 .

It is a cyclic number.

It is not a de Polignac number, because 104121222421 - 2⁵ = 104121222389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104121222392 and 104121222401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104121222427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300928216 + ... + 300928561.

It is an arithmetic number, because the mean of its divisors is an integer number (26180769843).

Almost surely, 2^104121222421 is an apocalyptic number.

It is an amenable number.

104121222421 is a deficient number, since it is larger than the sum of its proper divisors (601856951).

104121222421 is an equidigital number, since it uses as much as digits as its factorization.

104121222421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601856950.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 104121222421 its reverse (124222121401), we get a palindrome (228343343822).

The spelling of 104121222421 in words is "one hundred four billion, one hundred twenty-one million, two hundred twenty-two thousand, four hundred twenty-one".