33120322020 has 72 divisors (see below), whose sum is σ = 100820131776. Its totient is φ = 8800863552.

The previous prime is 33120322019. The next prime is 33120322049. The reversal of 33120322020 is 2022302133.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 33120321984 and 33120322002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274152 + ... + 376031.

It is an arithmetic number, because the mean of its divisors is an integer number (1400279608).

Almost surely, 2^33120322020 is an apocalyptic number.

33120322020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33120322020 is an abundant number, since it is smaller than the sum of its proper divisors (67699809756).

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

33120322020 is a wasteful number, since it uses less digits than its factorization.

33120322020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650481 (or 650476 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 33120322020 its reverse (2022302133), we get a palindrome (35142624153).

The spelling of 33120322020 in words is "thirty-three billion, one hundred twenty million, three hundred twenty-two thousand, twenty".