1222410121 has 4 divisors (see below), whose sum is σ = 1252225044. Its totient is φ = 1192595200.

The previous prime is 1222410089. The next prime is 1222410191. The reversal of 1222410121 is 1210142221.

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 384944400 + 837465721 = 19620^2 + 28939^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222410121 - 2⁵ = 1222410089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222410095 and 1222410104.

It is not an unprimeable number, because it can be changed into a prime (1222410191) 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 3 ways as a sum of consecutive naturals, for example, 14907400 + ... + 14907481.

It is an arithmetic number, because the mean of its divisors is an integer number (313056261).

Almost surely, 2^1222410121 is an apocalyptic number.

It is an amenable number.

1222410121 is a deficient number, since it is larger than the sum of its proper divisors (29814923).

1222410121 is an equidigital number, since it uses as much as digits as its factorization.

1222410121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29814922.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1222410121 is about 34962.9821525567. The cubic root of 1222410121 is about 1069.2328973530.

Adding to 1222410121 its reverse (1210142221), we get a palindrome (2432552342).

The spelling of 1222410121 in words is "one billion, two hundred twenty-two million, four hundred ten thousand, one hundred twenty-one".