1212220120012 has 24 divisors (see below), whose sum is σ = 2436040434240. Its totient is φ = 522008663760.

The previous prime is 1212220119991. The next prime is 1212220120057. The reversal of 1212220120012 is 2100210222121.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725011198 + ... + 725012869.

It is an arithmetic number, because the mean of its divisors is an integer number (101501684760).

Almost surely, 2^{1212220120012} is an apocalyptic number.

It is an amenable number.

1212220120012 is an abundant number, since it is smaller than the sum of its proper divisors (1223820314228).

1212220120012 is a wasteful number, since it uses less digits than its factorization.

1212220120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450024101 (or 1450024099 counting only the distinct ones).

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

Adding to 1212220120012 its reverse (2100210222121), we get a palindrome (3312430342133).

The spelling of 1212220120012 in words is "one trillion, two hundred twelve billion, two hundred twenty million, one hundred twenty thousand, twelve".