1212121110102 has 32 divisors (see below), whose sum is σ = 2770597792512. Its totient is φ = 346315910304.

The previous prime is 1212121110097. The next prime is 1212121110133. The reversal of 1212121110102 is 2010111212121.

It is a happy number.

It is a super-4 number, since 4×1212121110102⁴ (a number of 49 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4658533 + ... + 4911839.

It is an arithmetic number, because the mean of its divisors is an integer number (86581181016).

Almost surely, 2^{1212121110102} is an apocalyptic number.

1212121110102 is an abundant number, since it is smaller than the sum of its proper divisors (1558476682410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212121110102 is a wasteful number, since it uses less digits than its factorization.

1212121110102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367252.

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

Adding to 1212121110102 its reverse (2010111212121), we get a palindrome (3222232322223).

The spelling of 1212121110102 in words is "one trillion, two hundred twelve billion, one hundred twenty-one million, one hundred ten thousand, one hundred two".