1212101110012 has 12 divisors (see below), whose sum is σ = 2284344399736. Its totient is φ = 559431281520.

The previous prime is 1212101110007. The next prime is 1212101110013. The reversal of 1212101110012 is 2100111012121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1212101109974 and 1212101110001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212101110013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11654818314 + ... + 11654818417.

Almost surely, 2^{1212101110012} is an apocalyptic number.

It is an amenable number.

1212101110012 is a deficient number, since it is larger than the sum of its proper divisors (1072243289724).

1212101110012 is a wasteful number, since it uses less digits than its factorization.

1212101110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23309636748 (or 23309636746 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1212101110012 its reverse (2100111012121), we get a palindrome (3312212122133).

The spelling of 1212101110012 in words is "one trillion, two hundred twelve billion, one hundred one million, one hundred ten thousand, twelve".