1212121211102 has 16 divisors (see below), whose sum is σ = 1826005975872. Its totient is φ = 603457344000.

The previous prime is 1212121211101. The next prime is 1212121211107. The reversal of 1212121211102 is 2011121212121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212121211101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 691163 + ... + 1703510.

It is an arithmetic number, because the mean of its divisors is an integer number (114125373492).

Almost surely, 2^{1212121211102} is an apocalyptic number.

1212121211102 is a deficient number, since it is larger than the sum of its proper divisors (613884764770).

1212121211102 is a wasteful number, since it uses less digits than its factorization.

1212121211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395763.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1212121211102 its reverse (2011121212121), we get a palindrome (3223242423223).

The spelling of 1212121211102 in words is "one trillion, two hundred twelve billion, one hundred twenty-one million, two hundred eleven thousand, one hundred two".