20301223033 has 32 divisors (see below), whose sum is σ = 26303510016. Its totient is φ = 15227993088.

The previous prime is 20301223027. The next prime is 20301223039. The reversal of 20301223033 is 33032210302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20301223027) and next prime (20301223039).

It is a de Polignac number, because none of the positive numbers 2^k-20301223033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20301223033.

It is not an unprimeable number, because it can be changed into a prime (20301223039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193591 + ... + 279427.

It is an arithmetic number, because the mean of its divisors is an integer number (821984688).

Almost surely, 2^20301223033 is an apocalyptic number.

20301223033 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20301223033 is a deficient number, since it is larger than the sum of its proper divisors (6002286983).

20301223033 is a wasteful number, since it uses less digits than its factorization.

20301223033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85993.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20301223033 its reverse (33032210302), we get a palindrome (53333433335).

The spelling of 20301223033 in words is "twenty billion, three hundred one million, two hundred twenty-three thousand, thirty-three".