1211212110102 has 8 divisors (see below), whose sum is σ = 2422424220216. Its totient is φ = 403737370032.

The previous prime is 1211212110089. The next prime is 1211212110127. The reversal of 1211212110102 is 2010112121121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1211212110102 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 100934342503 + ... + 100934342514.

It is an arithmetic number, because the mean of its divisors is an integer number (302803027527).

Almost surely, 2^{1211212110102} is an apocalyptic number.

1211212110102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1211212110102 is a wasteful number, since it uses less digits than its factorization.

1211212110102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201868685022.

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

Adding to 1211212110102 its reverse (2010112121121), we get a palindrome (3221324231223).

The spelling of 1211212110102 in words is "one trillion, two hundred eleven billion, two hundred twelve million, one hundred ten thousand, one hundred two".