33213031121 has 8 divisors (see below), whose sum is σ = 35168575464. Its totient is φ = 31257690880.

The previous prime is 33213031109. The next prime is 33213031211. The reversal of 33213031121 is 12113031233.

It can be written as a sum of positive squares in 4 ways, for example, as 2879932225 + 30333098896 = 53665^2 + 174164^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33213031121 - 2¹⁸ = 33212768977 is a prime.

It is a super-2 number, since 2×33213031121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33213031093 and 33213031102.

It is not an unprimeable number, because it can be changed into a prime (33213033121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395951 + ... + 472443.

It is an arithmetic number, because the mean of its divisors is an integer number (4396071933).

Almost surely, 2^33213031121 is an apocalyptic number.

It is an amenable number.

33213031121 is a deficient number, since it is larger than the sum of its proper divisors (1955544343).

33213031121 is a wasteful number, since it uses less digits than its factorization.

33213031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102051.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 33213031121 its reverse (12113031233), we get a palindrome (45326062354).

The spelling of 33213031121 in words is "thirty-three billion, two hundred thirteen million, thirty-one thousand, one hundred twenty-one".