1212122110012 has 24 divisors (see below), whose sum is σ = 2314104352560. Its totient is φ = 550951964160.

The previous prime is 1212122110009. The next prime is 1212122110103. The reversal of 1212122110012 is 2100112212121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1781814 + ... + 2366242.

It is an arithmetic number, because the mean of its divisors is an integer number (96421014690).

Almost surely, 2^{1212122110012} is an apocalyptic number.

It is an amenable number.

1212122110012 is a deficient number, since it is larger than the sum of its proper divisors (1101982242548).

1212122110012 is a wasteful number, since it uses less digits than its factorization.

1212122110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631581 (or 631579 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212122110012 its reverse (2100112212121), we get a palindrome (3312234322133).

The spelling of 1212122110012 in words is "one trillion, two hundred twelve billion, one hundred twenty-two million, one hundred ten thousand, twelve".