1213301123 has 4 divisors (see below), whose sum is σ = 1225809480. Its totient is φ = 1200792768.

The previous prime is 1213301113. The next prime is 1213301137. The reversal of 1213301123 is 3211033121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3211033121 = 41 ⋅78317881.

It is a cyclic number.

It is not a de Polignac number, because 1213301123 - 2¹⁸ = 1213038979 is a prime.

It is a super-2 number, since 2×1213301123² = 2944199230146122258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213301113) 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, 6254033 + ... + 6254226.

It is an arithmetic number, because the mean of its divisors is an integer number (306452370).

Almost surely, 2^1213301123 is an apocalyptic number.

1213301123 is a deficient number, since it is larger than the sum of its proper divisors (12508357).

1213301123 is an equidigital number, since it uses as much as digits as its factorization.

1213301123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12508356.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1213301123 is about 34832.4722493251. The cubic root of 1213301123 is about 1066.5704158051.

Adding to 1213301123 its reverse (3211033121), we get a palindrome (4424334244).

The spelling of 1213301123 in words is "one billion, two hundred thirteen million, three hundred one thousand, one hundred twenty-three".