33223220000000 has 144 divisors (see below), whose sum is σ = 82895664934992. Its totient is φ = 13289280000000.

The previous prime is 33223219999999. The next prime is 33223220000041. The reversal of 33223220000000 is 2232233.

It can be written as a sum of positive squares in 8 ways, for example, as 19543755572224 + 13679464427776 = 4420832^2 + 3698576^2 .

It is a super-2 number, since 2×33223220000000² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19169420 + ... + 20830580.

Almost surely, 2^{33223220000000} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33223220000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41447832467496).

33223220000000 is an abundant number, since it is smaller than the sum of its proper divisors (49672444934992).

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

33223220000000 is an frugal number, since it uses more digits than its factorization.

33223220000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661212 (or 1661168 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

Adding to 33223220000000 its reverse (2232233), we get a palindrome (33223222232233).

The spelling of 33223220000000 in words is "thirty-three trillion, two hundred twenty-three billion, two hundred twenty million", and thus it is an aban number.