3212311221020 has 36 divisors (see below), whose sum is σ = 7414863840552. Its totient is φ = 1168113170400.

The previous prime is 3212311220981. The next prime is 3212311221037. The reversal of 3212311221020 is 201221132123.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3212311220983 and 3212311221001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 663698246 + ... + 663703085.

Almost surely, 2^{3212311221020} is an apocalyptic number.

It is an amenable number.

3212311221020 is an abundant number, since it is smaller than the sum of its proper divisors (4202552619532).

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

3212311221020 is a wasteful number, since it uses less digits than its factorization.

3212311221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327401362 (or 1327401349 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 3212311221020 its reverse (201221132123), we get a palindrome (3413532353143).

The spelling of 3212311221020 in words is "three trillion, two hundred twelve billion, three hundred eleven million, two hundred twenty-one thousand, twenty".