212002001220 has 48 divisors (see below), whose sum is σ = 593836205760. Its totient is φ = 56511904896.

The previous prime is 212002001203. The next prime is 212002001243. The reversal of 212002001220 is 22100200212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 212002001196 and 212002001205.

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, 530287 + ... + 839766.

It is an arithmetic number, because the mean of its divisors is an integer number (12371587620).

Almost surely, 2^212002001220 is an apocalyptic number.

212002001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212002001220 is an abundant number, since it is smaller than the sum of its proper divisors (381834204540).

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

212002001220 is a wasteful number, since it uses less digits than its factorization.

212002001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372644 (or 1372642 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 212002001220 its reverse (22100200212), we get a palindrome (234102201432).

The spelling of 212002001220 in words is "two hundred twelve billion, two million, one thousand, two hundred twenty".