33220120123021 has 32 divisors (see below), whose sum is σ = 37662012460800. Its totient is φ = 29072216769024.

The previous prime is 33220120123013. The next prime is 33220120123087. The reversal of 33220120123021 is 12032102102233.

It is not a de Polignac number, because 33220120123021 - 2³ = 33220120123013 is a prime.

It is a super-2 number, since 2×33220120123021² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33220120122983 and 33220120123001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220120126021) 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, 20006961 + ... + 21603673.

It is an arithmetic number, because the mean of its divisors is an integer number (1176937889400).

Almost surely, 2^{33220120123021} is an apocalyptic number.

It is an amenable number.

33220120123021 is a deficient number, since it is larger than the sum of its proper divisors (4441892337779).

33220120123021 is a wasteful number, since it uses less digits than its factorization.

33220120123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597365.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 33220120123021 its reverse (12032102102233), we get a palindrome (45252222225254).

The spelling of 33220120123021 in words is "thirty-three trillion, two hundred twenty billion, one hundred twenty million, one hundred twenty-three thousand, twenty-one".