212020031220 has 48 divisors (see below), whose sum is σ = 593676252288. Its totient is φ = 56536754560.

The previous prime is 212020031213. The next prime is 212020031287. The reversal of 212020031220 is 22130020212.

It is a happy number.

212020031220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212020031220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3071890 + ... + 3140150.

It is an arithmetic number, because the mean of its divisors is an integer number (12368255256).

Almost surely, 2^212020031220 is an apocalyptic number.

212020031220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212020031220 is an abundant number, since it is smaller than the sum of its proper divisors (381656221068).

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

212020031220 is a wasteful number, since it uses less digits than its factorization.

212020031220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120040 (or 120038 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 212020031220 its reverse (22130020212), we get a palindrome (234150051432).

The spelling of 212020031220 in words is "two hundred twelve billion, twenty million, thirty-one thousand, two hundred twenty".