1211031212122 has 4 divisors (see below), whose sum is σ = 1816546818186. Its totient is φ = 605515606060.

The previous prime is 1211031212113. The next prime is 1211031212147. The reversal of 1211031212122 is 2212121301121.

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., 1028214252081 + 182816960041 = 1014009^2 + 427571^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1211031212122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302757803029 + ... + 302757803032.

Almost surely, 2^{1211031212122} is an apocalyptic number.

1211031212122 is a deficient number, since it is larger than the sum of its proper divisors (605515606064).

1211031212122 is an equidigital number, since it uses as much as digits as its factorization.

1211031212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605515606063.

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

Adding to 1211031212122 its reverse (2212121301121), we get a palindrome (3423152513243).

The spelling of 1211031212122 in words is "one trillion, two hundred eleven billion, thirty-one million, two hundred twelve thousand, one hundred twenty-two".