11012121004043 has 4 divisors (see below), whose sum is σ = 11490908873808. Its totient is φ = 10533333134280.

The previous prime is 11012121004009. The next prime is 11012121004061. The reversal of 11012121004043 is 34040012121011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11012121004043 - 2⁶ = 11012121003979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11012121004063) 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, 239393934848 + ... + 239393934893.

It is an arithmetic number, because the mean of its divisors is an integer number (2872727218452).

Almost surely, 2^{11012121004043} is an apocalyptic number.

11012121004043 is a deficient number, since it is larger than the sum of its proper divisors (478787869765).

11012121004043 is an equidigital number, since it uses as much as digits as its factorization.

11012121004043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478787869764.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 11012121004043 its reverse (34040012121011), we get a palindrome (45052133125054).

The spelling of 11012121004043 in words is "eleven trillion, twelve billion, one hundred twenty-one million, four thousand, forty-three".