33121121340 has 48 divisors (see below), whose sum is σ = 92752658208. Its totient is φ = 8831011584.

The previous prime is 33121121333. The next prime is 33121121387. The reversal of 33121121340 is 4312112133.

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, 417934 + ... + 490826.

It is an arithmetic number, because the mean of its divisors is an integer number (1932347046).

Almost surely, 2^33121121340 is an apocalyptic number.

33121121340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33121121340 is an abundant number, since it is smaller than the sum of its proper divisors (59631536868).

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

33121121340 is a wasteful number, since it uses less digits than its factorization.

33121121340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80478 (or 80476 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 33121121340 its reverse (4312112133), we get a palindrome (37433233473).

The spelling of 33121121340 in words is "thirty-three billion, one hundred twenty-one million, one hundred twenty-one thousand, three hundred forty".