123212401133 has 4 divisors (see below), whose sum is σ = 123490533408. Its totient is φ = 122934268860.

The previous prime is 123212401097. The next prime is 123212401141. The reversal of 123212401133 is 331104212321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 331104212321 = 12917 ⋅25633213.

It is a cyclic number.

It is not a de Polignac number, because 123212401133 - 2¹⁴ = 123212384749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123212401099 and 123212401108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123212401733) 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, 139065473 + ... + 139066358.

It is an arithmetic number, because the mean of its divisors is an integer number (30872633352).

Almost surely, 2^123212401133 is an apocalyptic number.

It is an amenable number.

123212401133 is a deficient number, since it is larger than the sum of its proper divisors (278132275).

123212401133 is an equidigital number, since it uses as much as digits as its factorization.

123212401133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278132274.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 123212401133 its reverse (331104212321), we get a palindrome (454316613454).

The spelling of 123212401133 in words is "one hundred twenty-three billion, two hundred twelve million, four hundred one thousand, one hundred thirty-three".