122105331421 has 8 divisors (see below), whose sum is σ = 122255714880. Its totient is φ = 121955032992.

The previous prime is 122105331407. The next prime is 122105331427. The reversal of 122105331421 is 124133501221.

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 122105331421 - 2¹³ = 122105323229 is a prime.

It is a super-2 number, since 2×122105331421² (a number of 23 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 (122105331427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3134761 + ... + 3173473.

It is an arithmetic number, because the mean of its divisors is an integer number (15281964360).

Almost surely, 2^122105331421 is an apocalyptic number.

It is an amenable number.

122105331421 is a deficient number, since it is larger than the sum of its proper divisors (150383459).

122105331421 is a wasteful number, since it uses less digits than its factorization.

122105331421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42515.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 122105331421 its reverse (124133501221), we get a palindrome (246238832642).

The spelling of 122105331421 in words is "one hundred twenty-two billion, one hundred five million, three hundred thirty-one thousand, four hundred twenty-one".