1212210220000 has 120 divisors (see below), whose sum is σ = 3211621121016. Its totient is φ = 447585216000.

The previous prime is 1212210219953. The next prime is 1212210220019. The reversal of 1212210220000 is 220122121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2071174 + ... + 2591173.

Almost surely, 2^{1212210220000} is an apocalyptic number.

1212210220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212210220000 is an abundant number, since it is smaller than the sum of its proper divisors (1999410901016).

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

1212210220000 is an equidigital number, since it uses as much as digits as its factorization.

1212210220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662390 (or 4662367 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1212210220000 its reverse (220122121), we get a palindrome (1212430342121).

The spelling of 1212210220000 in words is "one trillion, two hundred twelve billion, two hundred ten million, two hundred twenty thousand".