2221220220212 has 48 divisors (see below), whose sum is σ = 4552250709888. Its totient is φ = 928435630080.

The previous prime is 2221220220203. The next prime is 2221220220259. The reversal of 2221220220212 is 2120220221222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3292883 + ... + 3909669.

It is an arithmetic number, because the mean of its divisors is an integer number (94838556456).

Almost surely, 2^{2221220220212} is an apocalyptic number.

It is an amenable number.

2221220220212 is an abundant number, since it is smaller than the sum of its proper divisors (2331030489676).

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

2221220220212 is a wasteful number, since it uses less digits than its factorization.

2221220220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619976 (or 619974 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 2221220220212 its reverse (2120220221222), we get a palindrome (4341440441434).

The spelling of 2221220220212 in words is "two trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twenty thousand, two hundred twelve".