212212122020 has 48 divisors (see below), whose sum is σ = 465321205440. Its totient is φ = 81191800704.

The previous prime is 212212122011. The next prime is 212212122029. The reversal of 212212122020 is 20221212212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212212122011) and next prime (212212122029).

It is a self number, because there is not a number n which added to its sum of digits gives 212212122020.

It is not an unprimeable number, because it can be changed into a prime (212212122029) 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, 1647674 + ... + 1771793.

It is an arithmetic number, because the mean of its divisors is an integer number (9694191780).

Almost surely, 2^212212122020 is an apocalyptic number.

212212122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212212122020 is an abundant number, since it is smaller than the sum of its proper divisors (253109083420).

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

212212122020 is a wasteful number, since it uses less digits than its factorization.

212212122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3419612 (or 3419610 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212212122020 its reverse (20221212212), we get a palindrome (232433334232).

The spelling of 212212122020 in words is "two hundred twelve billion, two hundred twelve million, one hundred twenty-two thousand, twenty".