1212021120202 has 4 divisors (see below), whose sum is σ = 1818031680306. Its totient is φ = 606010560100.

The previous prime is 1212021120157. The next prime is 1212021120227. The reversal of 1212021120202 is 2020211202121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1187796999321 + 24224120881 = 1089861^2 + 155641^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303005280049 + ... + 303005280052.

Almost surely, 2^{1212021120202} is an apocalyptic number.

1212021120202 is a deficient number, since it is larger than the sum of its proper divisors (606010560104).

1212021120202 is an equidigital number, since it uses as much as digits as its factorization.

1212021120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606010560103.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212021120202 its reverse (2020211202121), we get a palindrome (3232232322323).

The spelling of 1212021120202 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred twenty thousand, two hundred two".