3211212120220 has 48 divisors (see below), whose sum is σ = 7317717045408. Its totient is φ = 1176627329280.

The previous prime is 3211212120139. The next prime is 3211212120227. The reversal of 3211212120220 is 220212121123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3211212120227) 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, 47106459 + ... + 47174578.

It is an arithmetic number, because the mean of its divisors is an integer number (152452438446).

Almost surely, 2^{3211212120220} is an apocalyptic number.

It is an amenable number.

3211212120220 is an abundant number, since it is smaller than the sum of its proper divisors (4106504925188).

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

3211212120220 is a wasteful number, since it uses less digits than its factorization.

3211212120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94281190 (or 94281188 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 3211212120220 its reverse (220212121123), we get a palindrome (3431424241343).

The spelling of 3211212120220 in words is "three trillion, two hundred eleven billion, two hundred twelve million, one hundred twenty thousand, two hundred twenty".