1212210220012 has 24 divisors (see below), whose sum is σ = 2314367096832. Its totient is φ = 550969506000.

The previous prime is 1212210219953. The next prime is 1212210220019. The reversal of 1212210220012 is 2100220122121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1212210220019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174364 + ... + 1566787.

It is an arithmetic number, because the mean of its divisors is an integer number (96431962368).

Almost surely, 2^{1212210220012} is an apocalyptic number.

It is an amenable number.

1212210220012 is a deficient number, since it is larger than the sum of its proper divisors (1102156876820).

1212210220012 is a wasteful number, since it uses less digits than its factorization.

1212210220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756989 (or 1756987 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212210220012 its reverse (2100220122121), we get a palindrome (3312430342133).

The spelling of 1212210220012 in words is "one trillion, two hundred twelve billion, two hundred ten million, two hundred twenty thousand, twelve".