1212021222212 has 24 divisors (see below), whose sum is σ = 2140523280000. Its totient is φ = 600446731136.

The previous prime is 1212021222157. The next prime is 1212021222229. The reversal of 1212021222212 is 2122221202121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 908489 + ... + 1802607.

It is an arithmetic number, because the mean of its divisors is an integer number (89188470000).

Almost surely, 2^{1212021222212} is an apocalyptic number.

It is an amenable number.

1212021222212 is a deficient number, since it is larger than the sum of its proper divisors (928502057788).

1212021222212 is a wasteful number, since it uses less digits than its factorization.

1212021222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897235 (or 897233 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1212021222212 its reverse (2122221202121), we get a palindrome (3334242424333).

The spelling of 1212021222212 in words is "one trillion, two hundred twelve billion, twenty-one million, two hundred twenty-two thousand, two hundred twelve".