33230121220 has 24 divisors (see below), whose sum is σ = 70739192664. Its totient is φ = 13109965056.

The previous prime is 33230121191. The next prime is 33230121233. The reversal of 33230121220 is 2212103233.

It can be written as a sum of positive squares in 4 ways, for example, as 12404167876 + 20825953344 = 111374^2 + 144312^2 .

It is a super-2 number, since 2×33230121220² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11378719 + ... + 11381638.

It is an arithmetic number, because the mean of its divisors is an integer number (2947466361).

Almost surely, 2^33230121220 is an apocalyptic number.

It is an amenable number.

33230121220 is an abundant number, since it is smaller than the sum of its proper divisors (37509071444).

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

33230121220 is a wasteful number, since it uses less digits than its factorization.

33230121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22760439 (or 22760437 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 33230121220 its reverse (2212103233), we get a palindrome (35442224453).

The spelling of 33230121220 in words is "thirty-three billion, two hundred thirty million, one hundred twenty-one thousand, two hundred twenty".