10405222121 has 8 divisors (see below), whose sum is σ = 11897913984. Its totient is φ = 8914088160.

The previous prime is 10405222109. The next prime is 10405222133. The reversal of 10405222121 is 12122250401.

10405222121 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10405222109) and next prime (10405222133).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10405222121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10405222093 and 10405222102.

It is not an unprimeable number, because it can be changed into a prime (10405242121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375125 + ... + 401906.

It is an arithmetic number, because the mean of its divisors is an integer number (1487239248).

Almost surely, 2^10405222121 is an apocalyptic number.

It is an amenable number.

10405222121 is a deficient number, since it is larger than the sum of its proper divisors (1492691863).

10405222121 is an equidigital number, since it uses as much as digits as its factorization.

10405222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778951.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 10405222121 its reverse (12122250401), we get a palindrome (22527472522).

The spelling of 10405222121 in words is "ten billion, four hundred five million, two hundred twenty-two thousand, one hundred twenty-one".