11020020423 has 4 divisors (see below), whose sum is σ = 14693360568. Its totient is φ = 7346680280.

The previous prime is 11020020421. The next prime is 11020020499. The reversal of 11020020423 is 32402002011.

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 11020020423 - 2¹ = 11020020421 is a prime.

It is a super-3 number, since 3×11020020423³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020020421) 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, 1836670068 + ... + 1836670073.

It is an arithmetic number, because the mean of its divisors is an integer number (3673340142).

Almost surely, 2^11020020423 is an apocalyptic number.

11020020423 is a deficient number, since it is larger than the sum of its proper divisors (3673340145).

11020020423 is an equidigital number, since it uses as much as digits as its factorization.

11020020423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673340144.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 11020020423 its reverse (32402002011), we get a palindrome (43422022434).

The spelling of 11020020423 in words is "eleven billion, twenty million, twenty thousand, four hundred twenty-three".