1111203212122 has 4 divisors (see below), whose sum is σ = 1666804818186. Its totient is φ = 555601606060.

The previous prime is 1111203212083. The next prime is 1111203212131. The reversal of 1111203212122 is 2212123021111.

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., 1004587248681 + 106615963441 = 1002291^2 + 326521^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1111203212122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277800803029 + ... + 277800803032.

Almost surely, 2^{1111203212122} is an apocalyptic number.

1111203212122 is a deficient number, since it is larger than the sum of its proper divisors (555601606064).

1111203212122 is an equidigital number, since it uses as much as digits as its factorization.

1111203212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555601606063.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1111203212122 its reverse (2212123021111), we get a palindrome (3323326233233).

The spelling of 1111203212122 in words is "one trillion, one hundred eleven billion, two hundred three million, two hundred twelve thousand, one hundred twenty-two".