1210021202122 has 4 divisors (see below), whose sum is σ = 1815031803186. Its totient is φ = 605010601060.

The previous prime is 1210021202059. The next prime is 1210021202149. The reversal of 1210021202122 is 2212021200121.

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., 1120123772881 + 89897429241 = 1058359^2 + 299829^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1210021202096 and 1210021202105.

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 as a sum of consecutive naturals, namely, 302505300529 + ... + 302505300532.

Almost surely, 2^{1210021202122} is an apocalyptic number.

1210021202122 is a deficient number, since it is larger than the sum of its proper divisors (605010601064).

1210021202122 is an equidigital number, since it uses as much as digits as its factorization.

1210021202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605010601063.

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

Adding to 1210021202122 its reverse (2212021200121), we get a palindrome (3422042402243).

The spelling of 1210021202122 in words is "one trillion, two hundred ten billion, twenty-one million, two hundred two thousand, one hundred twenty-two".