1213322123 has 8 divisors (see below), whose sum is σ = 1324555008. Its totient is φ = 1104646464.

The previous prime is 1213322101. The next prime is 1213322153. The reversal of 1213322123 is 3212233121.

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 1213322123 - 2⁸ = 1213321867 is a prime.

It is a super-3 number, since 3×1213322123³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213322095 and 1213322104.

It is not an unprimeable number, because it can be changed into a prime (1213322153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638315 + ... + 640212.

It is an arithmetic number, because the mean of its divisors is an integer number (165569376).

Almost surely, 2^1213322123 is an apocalyptic number.

1213322123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1213322123 is a deficient number, since it is larger than the sum of its proper divisors (111232885).

1213322123 is a wasteful number, since it uses less digits than its factorization.

1213322123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278613.

The product of its digits is 432, while the sum is 20.

The square root of 1213322123 is about 34832.7736908791. The cubic root of 1213322123 is about 1066.5765692238.

Adding to 1213322123 its reverse (3212233121), we get a palindrome (4425555244).

The spelling of 1213322123 in words is "one billion, two hundred thirteen million, three hundred twenty-two thousand, one hundred twenty-three".