12100402043 has 4 divisors (see below), whose sum is σ = 12108883080. Its totient is φ = 12091921008.

The previous prime is 12100402021. The next prime is 12100402121. The reversal of 12100402043 is 34020400121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34020400121 = 1069 ⋅31824509.

It is a cyclic number.

It is not a de Polignac number, because 12100402043 - 2¹⁸ = 12100139899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12100402243) 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, 4238378 + ... + 4241231.

It is an arithmetic number, because the mean of its divisors is an integer number (3027220770).

Almost surely, 2^12100402043 is an apocalyptic number.

12100402043 is a deficient number, since it is larger than the sum of its proper divisors (8481037).

12100402043 is an equidigital number, since it uses as much as digits as its factorization.

12100402043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8481036.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12100402043 its reverse (34020400121), we get a palindrome (46120802164).

The spelling of 12100402043 in words is "twelve billion, one hundred million, four hundred two thousand, forty-three".