1212012210111 has 8 divisors (see below), whose sum is σ = 1616182353840. Its totient is φ = 807925103232.

The previous prime is 1212012210107. The next prime is 1212012210121. The reversal of 1212012210111 is 1110122102121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1212012210111 - 2² = 1212012210107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212012210121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20725146 + ... + 20783543.

It is an arithmetic number, because the mean of its divisors is an integer number (202022794230).

Almost surely, 2^{1212012210111} is an apocalyptic number.

1212012210111 is a deficient number, since it is larger than the sum of its proper divisors (404170143729).

1212012210111 is an equidigital number, since it uses as much as digits as its factorization.

1212012210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41518425.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1212012210111 its reverse (1110122102121), we get a palindrome (2322134312232).

The spelling of 1212012210111 in words is "one trillion, two hundred twelve billion, twelve million, two hundred ten thousand, one hundred eleven".