33333023220 has 144 divisors (see below), whose sum is σ = 110880887040. Its totient is φ = 7456839936.

The previous prime is 33333023219. The next prime is 33333023257. The reversal of 33333023220 is 2232033333.

It is a super-2 number, since 2×33333023220² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17566 + ... + 258794.

It is an arithmetic number, because the mean of its divisors is an integer number (770006160).

Almost surely, 2^33333023220 is an apocalyptic number.

33333023220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33333023220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55440443520).

33333023220 is an abundant number, since it is smaller than the sum of its proper divisors (77547863820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33333023220 is a wasteful number, since it uses less digits than its factorization.

33333023220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241302 (or 241293 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 24.

Adding to 33333023220 its reverse (2232033333), we get a palindrome (35565056553).

The spelling of 33333023220 in words is "thirty-three billion, three hundred thirty-three million, twenty-three thousand, two hundred twenty".