1212021120122 has 16 divisors (see below), whose sum is σ = 1833978313440. Its totient is φ = 600713441328.

The previous prime is 1212021120109. The next prime is 1212021120133. The reversal of 1212021120122 is 2210211202121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212021120122.

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 7 ways as a sum of consecutive naturals, for example, 4474568 + ... + 4737699.

It is an arithmetic number, because the mean of its divisors is an integer number (114623644590).

Almost surely, 2^{1212021120122} is an apocalyptic number.

1212021120122 is a deficient number, since it is larger than the sum of its proper divisors (621957193318).

1212021120122 is a wasteful number, since it uses less digits than its factorization.

1212021120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9212845.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212021120122 its reverse (2210211202121), we get a palindrome (3422232322243).

The spelling of 1212021120122 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred twenty thousand, one hundred twenty-two".