33012011322220 has 72 divisors (see below), whose sum is σ = 82519060965264. Its totient is φ = 11055185172864.

The previous prime is 33012011322181. The next prime is 33012011322247. The reversal of 33012011322220 is 2222311021033.

It is a junction number, because it is equal to n+sod(n) for n = 33012011322191 and 33012011322200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 391652347 + ... + 391736626.

It is an arithmetic number, because the mean of its divisors is an integer number (1146098068962).

Almost surely, 2^{33012011322220} is an apocalyptic number.

It is an amenable number.

33012011322220 is an abundant number, since it is smaller than the sum of its proper divisors (49507049643044).

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

33012011322220 is a wasteful number, since it uses less digits than its factorization.

33012011322220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783389039 (or 783389030 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 33012011322220 its reverse (2222311021033), we get a palindrome (35234322343253).

The spelling of 33012011322220 in words is "thirty-three trillion, twelve billion, eleven million, three hundred twenty-two thousand, two hundred twenty".