1211000002122 has 16 divisors (see below), whose sum is σ = 2445514568640. Its totient is φ = 399747573312.

The previous prime is 1211000002081. The next prime is 1211000002141. The reversal of 1211000002122 is 2212000001121.

It is a junction number, because it is equal to n+sod(n) for n = 1211000002098 and 1211000002107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979772847 + ... + 979774082.

It is an arithmetic number, because the mean of its divisors is an integer number (152844660540).

Almost surely, 2^{1211000002122} is an apocalyptic number.

1211000002122 is an abundant number, since it is smaller than the sum of its proper divisors (1234514566518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211000002122 is a wasteful number, since it uses less digits than its factorization.

1211000002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959547037.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1211000002122 its reverse (2212000001121), we get a palindrome (3423000003243).

The spelling of 1211000002122 in words is "one trillion, two hundred eleven billion, two thousand, one hundred twenty-two".