1211211222122 has 32 divisors (see below), whose sum is σ = 1994855304384. Its totient is φ = 546977059200.

The previous prime is 1211211222113. The next prime is 1211211222127. The reversal of 1211211222122 is 2212221121121.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1211211222094 and 1211211222103.

It is not an unprimeable number, because it can be changed into a prime (1211211222127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10200518 + ... + 10318574.

It is an arithmetic number, because the mean of its divisors is an integer number (62339228262).

Almost surely, 2^{1211211222122} is an apocalyptic number.

1211211222122 is a deficient number, since it is larger than the sum of its proper divisors (783644082262).

1211211222122 is a wasteful number, since it uses less digits than its factorization.

1211211222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121094.

The product of its digits is 128, while the sum is 20.

Adding to 1211211222122 its reverse (2212221121121), we get a palindrome (3423432343243).

The spelling of 1211211222122 in words is "one trillion, two hundred eleven billion, two hundred eleven million, two hundred twenty-two thousand, one hundred twenty-two".