1212021122202 has 48 divisors (see below), whose sum is σ = 2864862404352. Its totient is φ = 367268204160.

The previous prime is 1212021122173. The next prime is 1212021122281. The reversal of 1212021122202 is 2022211202121.

It is a happy number.

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

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 23 ways as a sum of consecutive naturals, for example, 8741623 + ... + 8879189.

It is an arithmetic number, because the mean of its divisors is an integer number (59684633424).

Almost surely, 2^{1212021122202} is an apocalyptic number.

1212021122202 is an abundant number, since it is smaller than the sum of its proper divisors (1652841282150).

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

1212021122202 is a wasteful number, since it uses less digits than its factorization.

1212021122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182083 (or 182080 counting only the distinct ones).

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

Adding to 1212021122202 its reverse (2022211202121), we get a palindrome (3234232324323).

The spelling of 1212021122202 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred twenty-two thousand, two hundred two".