1212212020212 has 36 divisors (see below), whose sum is σ = 3197428809120. Its totient is φ = 386502382992.

The previous prime is 1212212020183. The next prime is 1212212020277. The reversal of 1212212020212 is 2120202122121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 732011262 + ... + 732012917.

It is an arithmetic number, because the mean of its divisors is an integer number (88817466920).

Almost surely, 2^{1212212020212} is an apocalyptic number.

1212212020212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212212020212 is an abundant number, since it is smaller than the sum of its proper divisors (1985216788908).

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

1212212020212 is a wasteful number, since it uses less digits than its factorization.

1212212020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464024212 (or 1464024207 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1212212020212 its reverse (2120202122121), we get a palindrome (3332414142333).

The spelling of 1212212020212 in words is "one trillion, two hundred twelve billion, two hundred twelve million, twenty thousand, two hundred twelve".