212203003220 has 24 divisors (see below), whose sum is σ = 479905254024. Its totient is φ = 78351878016.

The previous prime is 212203003169. The next prime is 212203003277. The reversal of 212203003220 is 22300302212.

It can be written as a sum of positive squares in 4 ways, for example, as 11882308036 + 200320695184 = 109006^2 + 447572^2 .

It is a super-2 number, since 2×212203003220² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 408082439 + ... + 408082958.

It is an arithmetic number, because the mean of its divisors is an integer number (19996052251).

Almost surely, 2^212203003220 is an apocalyptic number.

212203003220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212203003220 is an abundant number, since it is smaller than the sum of its proper divisors (267702250804).

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

212203003220 is a wasteful number, since it uses less digits than its factorization.

212203003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816165419 (or 816165417 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 212203003220 its reverse (22300302212), we get a palindrome (234503305432).

The spelling of 212203003220 in words is "two hundred twelve billion, two hundred three million, three thousand, two hundred twenty".