1222541123 has 4 divisors (see below), whose sum is σ = 1223383968. Its totient is φ = 1221698280.

The previous prime is 1222541107. The next prime is 1222541129. The reversal of 1222541123 is 3211452221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3211452221 = 21391 ⋅150131.

It is a cyclic number.

It is not a de Polignac number, because 1222541123 - 2⁴ = 1222541107 is a prime.

It is a super-2 number, since 2×1222541123² = 2989213594852202258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222541129) 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, 419243 + ... + 422148.

It is an arithmetic number, because the mean of its divisors is an integer number (305845992).

Almost surely, 2^1222541123 is an apocalyptic number.

1222541123 is a deficient number, since it is larger than the sum of its proper divisors (842845).

1222541123 is an equidigital number, since it uses as much as digits as its factorization.

1222541123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842844.

The product of its digits is 960, while the sum is 23.

The square root of 1222541123 is about 34964.8555409571. The cubic root of 1222541123 is about 1069.2710914752.

Adding to 1222541123 its reverse (3211452221), we get a palindrome (4433993344).

The spelling of 1222541123 in words is "one billion, two hundred twenty-two million, five hundred forty-one thousand, one hundred twenty-three".