1212121200212 has 48 divisors (see below), whose sum is σ = 2306303217792. Its totient is φ = 554074753920.

The previous prime is 1212121200209. The next prime is 1212121200221. The reversal of 1212121200212 is 2120021212121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24406718 + ... + 24456330.

It is an arithmetic number, because the mean of its divisors is an integer number (48047983704).

Almost surely, 2^{1212121200212} is an apocalyptic number.

It is an amenable number.

1212121200212 is a deficient number, since it is larger than the sum of its proper divisors (1094182017580).

1212121200212 is a wasteful number, since it uses less digits than its factorization.

1212121200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54128 (or 54126 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212121200212 its reverse (2120021212121), we get a palindrome (3332142412333).

It can be divided in two parts, 12121 and 21200212, that multiplied together give a palindrome (256967769652).

The spelling of 1212121200212 in words is "one trillion, two hundred twelve billion, one hundred twenty-one million, two hundred thousand, two hundred twelve".