1211001010122 has 16 divisors (see below), whose sum is σ = 2432578451040. Its totient is φ = 401904264912.

The previous prime is 1211001010117. The next prime is 1211001010171. The reversal of 1211001010122 is 2210101001121.

It is a junction number, because it is equal to n+sod(n) for n = 1211001010098 and 1211001010107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440683128 + ... + 440685875.

It is an arithmetic number, because the mean of its divisors is an integer number (152036153190).

Almost surely, 2^{1211001010122} is an apocalyptic number.

1211001010122 is an abundant number, since it is smaller than the sum of its proper divisors (1221577440918).

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

1211001010122 is a wasteful number, since it uses less digits than its factorization.

1211001010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881369237.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1211001010122 its reverse (2210101001121), we get a palindrome (3421102011243).

Subtracting 1211001010122 from its reverse (2210101001121), we obtain a palindrome (999099990999).

The spelling of 1211001010122 in words is "one trillion, two hundred eleven billion, one million, ten thousand, one hundred twenty-two".