1212122202102 has 72 divisors (see below), whose sum is σ = 3234751126776. Its totient is φ = 325948823424.

The previous prime is 1212122202073. The next prime is 1212122202139. The reversal of 1212122202102 is 2012022212121.

It is a happy number.

1212122202102 is a `hidden beast` number, since 1 + 21 + 212 + 220 + 210 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 40405248 + ... + 40435235.

It is an arithmetic number, because the mean of its divisors is an integer number (44927098983).

Almost surely, 2^{1212122202102} is an apocalyptic number.

1212122202102 is an abundant number, since it is smaller than the sum of its proper divisors (2022628924674).

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

1212122202102 is a wasteful number, since it uses less digits than its factorization.

1212122202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80840522 (or 80840512 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1212122202102 its reverse (2012022212121), we get a palindrome (3224144414223).

The spelling of 1212122202102 in words is "one trillion, two hundred twelve billion, one hundred twenty-two million, two hundred two thousand, one hundred two".