3221212302220 has 48 divisors (see below), whose sum is σ = 7381060194816. Its totient is φ = 1171103000000.

The previous prime is 3221212302173. The next prime is 3221212302221. The reversal of 3221212302220 is 222032121223.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 3221212302191 and 3221212302200.

It is not an unprimeable number, because it can be changed into a prime (3221212302221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495706 + ... + 2586145.

It is an arithmetic number, because the mean of its divisors is an integer number (153772087392).

Almost surely, 2^{3221212302220} is an apocalyptic number.

It is an amenable number.

3221212302220 is an abundant number, since it is smaller than the sum of its proper divisors (4159847892596).

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

3221212302220 is a wasteful number, since it uses less digits than its factorization.

3221212302220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3086622 (or 3086620 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 3221212302220 its reverse (222032121223), we get a palindrome (3443244423443).

The spelling of 3221212302220 in words is "three trillion, two hundred twenty-one billion, two hundred twelve million, three hundred two thousand, two hundred twenty".