1212110222212 has 48 divisors (see below), whose sum is σ = 2281252216320. Its totient is φ = 562165287552.

The previous prime is 1212110222203. The next prime is 1212110222233. The reversal of 1212110222212 is 2122220112121.

It is a super-2 number, since 2×1212110222212² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1212110222212.

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 15 ways as a sum of consecutive naturals, for example, 814563 + ... + 1757194.

It is an arithmetic number, because the mean of its divisors is an integer number (47526087840).

Almost surely, 2^{1212110222212} is an apocalyptic number.

It is an amenable number.

1212110222212 is a deficient number, since it is larger than the sum of its proper divisors (1069141994108).

1212110222212 is a wasteful number, since it uses less digits than its factorization.

1212110222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571940 (or 2571938 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1212110222212 its reverse (2122220112121), we get a palindrome (3334330334333).

The spelling of 1212110222212 in words is "one trillion, two hundred twelve billion, one hundred ten million, two hundred twenty-two thousand, two hundred twelve".