212122210220000 has 60 divisors (see below), whose sum is σ = 521852455521936. Its totient is φ = 84848884080000.

The previous prime is 212122210219957. The next prime is 212122210220003. The reversal of 212122210220000 is 22012221212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212122210220003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5303035256 + ... + 5303075255.

Almost surely, 2^{212122210220000} is an apocalyptic number.

212122210220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212122210220000 is an abundant number, since it is smaller than the sum of its proper divisors (309730245301936).

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

212122210220000 is an equidigital number, since it uses as much as digits as its factorization.

212122210220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10606110541 (or 10606110518 counting only the distinct ones).

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

Adding to 212122210220000 its reverse (22012221212), we get a palindrome (212144222441212).

The spelling of 212122210220000 in words is "two hundred twelve trillion, one hundred twenty-two billion, two hundred ten million, two hundred twenty thousand".