20111241043 has 4 divisors (see below), whose sum is σ = 21294255240. Its totient is φ = 18928226848.

The previous prime is 20111241023. The next prime is 20111241067. The reversal of 20111241043 is 34014211102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34014211102 = 2 ⋅17007105551.

It is a cyclic number.

It is not a de Polignac number, because 20111241043 - 2¹³ = 20111232851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20111241043.

It is not an unprimeable number, because it can be changed into a prime (20111241023) 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, 591507073 + ... + 591507106.

It is an arithmetic number, because the mean of its divisors is an integer number (5323563810).

Almost surely, 2^20111241043 is an apocalyptic number.

20111241043 is a deficient number, since it is larger than the sum of its proper divisors (1183014197).

20111241043 is a wasteful number, since it uses less digits than its factorization.

20111241043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183014196.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20111241043 its reverse (34014211102), we get a palindrome (54125452145).

The spelling of 20111241043 in words is "twenty billion, one hundred eleven million, two hundred forty-one thousand, forty-three".