1212002221202 has 8 divisors (see below), whose sum is σ = 1924944704316. Its totient is φ = 570353986432.

The previous prime is 1212002221121. The next prime is 1212002221217. The reversal of 1212002221202 is 2021222002121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1142121827401 + 69880393801 = 1068701^2 + 264349^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17823562043 + ... + 17823562110.

Almost surely, 2^{1212002221202} is an apocalyptic number.

1212002221202 is a deficient number, since it is larger than the sum of its proper divisors (712942483114).

1212002221202 is a wasteful number, since it uses less digits than its factorization.

1212002221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35647124172.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1212002221202 its reverse (2021222002121), we get a palindrome (3233224223323).

The spelling of 1212002221202 in words is "one trillion, two hundred twelve billion, two million, two hundred twenty-one thousand, two hundred two".