1212210111212 has 12 divisors (see below), whose sum is σ = 2213601072816. Its totient is φ = 579752661840.

The previous prime is 1212210111139. The next prime is 1212210111269. The reversal of 1212210111212 is 2121110122121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6588098339 + ... + 6588098522.

It is an arithmetic number, because the mean of its divisors is an integer number (184466756068).

Almost surely, 2^{1212210111212} is an apocalyptic number.

It is an amenable number.

1212210111212 is a deficient number, since it is larger than the sum of its proper divisors (1001390961604).

1212210111212 is a wasteful number, since it uses less digits than its factorization.

1212210111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13176196888 (or 13176196886 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1212210111212 its reverse (2121110122121), we get a palindrome (3333320233333).

The spelling of 1212210111212 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred eleven thousand, two hundred twelve".