1212211222212 has 48 divisors (see below), whose sum is σ = 2830809623040. Its totient is φ = 403739574528.

The previous prime is 1212211222163. The next prime is 1212211222231. The reversal of 1212211222212 is 2122221122121.

It is a super-3 number, since 3×1212211222212³ (a number of 37 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145536864 + ... + 145545192.

It is an arithmetic number, because the mean of its divisors is an integer number (58975200480).

Almost surely, 2^{1212211222212} is an apocalyptic number.

1212211222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212211222212 is an abundant number, since it is smaller than the sum of its proper divisors (1618598400828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212211222212 is a wasteful number, since it uses less digits than its factorization.

1212211222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16812 (or 16810 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

Adding to 1212211222212 its reverse (2122221122121), we get a palindrome (3334432344333).

The spelling of 1212211222212 in words is "one trillion, two hundred twelve billion, two hundred eleven million, two hundred twenty-two thousand, two hundred twelve".