33313220121 has 16 divisors (see below), whose sum is σ = 44686043136. Its totient is φ = 22075003776.

The previous prime is 33313220081. The next prime is 33313220173. The reversal of 33313220121 is 12102231333.

It is not a de Polignac number, because 33313220121 - 2²³ = 33304831513 is a prime.

It is a super-2 number, since 2×33313220121² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33313221121) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 287181 + ... + 386133.

It is an arithmetic number, because the mean of its divisors is an integer number (2792877696).

Almost surely, 2^33313220121 is an apocalyptic number.

It is an amenable number.

33313220121 is a deficient number, since it is larger than the sum of its proper divisors (11372823015).

33313220121 is a wasteful number, since it uses less digits than its factorization.

33313220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99632.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 33313220121 its reverse (12102231333), we get a palindrome (45415451454).

The spelling of 33313220121 in words is "thirty-three billion, three hundred thirteen million, two hundred twenty thousand, one hundred twenty-one".