1210202111122 has 4 divisors (see below), whose sum is σ = 1815303166686. Its totient is φ = 605101055560.

The previous prime is 1210202111117. The next prime is 1210202111161. The reversal of 1210202111122 is 2211112020121.

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., 948732492841 + 261469618281 = 974029^2 + 511341^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1210202111096 and 1210202111105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302550527779 + ... + 302550527782.

Almost surely, 2^{1210202111122} is an apocalyptic number.

1210202111122 is a deficient number, since it is larger than the sum of its proper divisors (605101055564).

1210202111122 is an equidigital number, since it uses as much as digits as its factorization.

1210202111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605101055563.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1210202111122 its reverse (2211112020121), we get a palindrome (3421314131243).

The spelling of 1210202111122 in words is "one trillion, two hundred ten billion, two hundred two million, one hundred eleven thousand, one hundred twenty-two".