33220004423 has 4 divisors (see below), whose sum is σ = 33246019800. Its totient is φ = 33193989048.

The previous prime is 33220004407. The next prime is 33220004459. The reversal of 33220004423 is 32440002233.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32440002233 = 1367 ⋅23730799.

It is a cyclic number.

It is not a de Polignac number, because 33220004423 - 2⁴ = 33220004407 is a prime.

It is a super-2 number, since 2×33220004423² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220000423) 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, 13005773 + ... + 13008326.

It is an arithmetic number, because the mean of its divisors is an integer number (8311504950).

Almost surely, 2^33220004423 is an apocalyptic number.

33220004423 is a deficient number, since it is larger than the sum of its proper divisors (26015377).

33220004423 is a wasteful number, since it uses less digits than its factorization.

33220004423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26015376.

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 33220004423 its reverse (32440002233), we get a palindrome (65660006656).

The spelling of 33220004423 in words is "thirty-three billion, two hundred twenty million, four thousand, four hundred twenty-three".