33121111220040 has 64 divisors (see below), whose sum is σ = 99438212309760. Its totient is φ = 8825640445440.

The previous prime is 33121111220027. The next prime is 33121111220047. The reversal of 33121111220040 is 4002211112133.

It is a junction number, because it is equal to n+sod(n) for n = 33121111219989 and 33121111220016.

It is not an unprimeable number, because it can be changed into a prime (33121111220047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103838221 + ... + 104156700.

It is an arithmetic number, because the mean of its divisors is an integer number (1553722067340).

Almost surely, 2^{33121111220040} is an apocalyptic number.

33121111220040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33121111220040 is an abundant number, since it is smaller than the sum of its proper divisors (66317101089720).

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

33121111220040 is a wasteful number, since it uses less digits than its factorization.

33121111220040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207996262 (or 207996258 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 33121111220040 its reverse (4002211112133), we get a palindrome (37123322332173).

The spelling of 33121111220040 in words is "thirty-three trillion, one hundred twenty-one billion, one hundred eleven million, two hundred twenty thousand, forty".