1222501123 has 4 divisors (see below), whose sum is σ = 1223490640. Its totient is φ = 1221511608.

The previous prime is 1222501121. The next prime is 1222501139. The reversal of 1222501123 is 3211052221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222501123 - 2¹ = 1222501121 is a prime.

It is a super-2 number, since 2×1222501123² = 2989017991472522258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222501123.

It is not an unprimeable number, because it can be changed into a prime (1222501121) 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, 492903 + ... + 495376.

It is an arithmetic number, because the mean of its divisors is an integer number (305872660).

Almost surely, 2^1222501123 is an apocalyptic number.

1222501123 is a deficient number, since it is larger than the sum of its proper divisors (989517).

1222501123 is an equidigital number, since it uses as much as digits as its factorization.

1222501123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989516.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1222501123 is about 34964.2835333430. The cubic root of 1222501123 is about 1069.2594296152.

Adding to 1222501123 its reverse (3211052221), we get a palindrome (4433553344).

The spelling of 1222501123 in words is "one billion, two hundred twenty-two million, five hundred one thousand, one hundred twenty-three".