1211202222122 has 16 divisors (see below), whose sum is σ = 1827521498880. Its totient is φ = 602029218672.

The previous prime is 1211202222029. The next prime is 1211202222127. The reversal of 1211202222122 is 2212222021121.

It is a junction number, because it is equal to n+sod(n) for n = 1211202222094 and 1211202222103.

It is not an unprimeable number, because it can be changed into a prime (1211202222127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2780579 + ... + 3186537.

It is an arithmetic number, because the mean of its divisors is an integer number (114220093680).

Almost surely, 2^{1211202222122} is an apocalyptic number.

1211202222122 is a deficient number, since it is larger than the sum of its proper divisors (616319276758).

1211202222122 is a wasteful number, since it uses less digits than its factorization.

1211202222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414757.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1211202222122 its reverse (2212222021121), we get a palindrome (3423424243243).

The spelling of 1211202222122 in words is "one trillion, two hundred eleven billion, two hundred two million, two hundred twenty-two thousand, one hundred twenty-two".