1211122202122 has 32 divisors (see below), whose sum is σ = 2094734525184. Its totient is φ = 514421779200.

The previous prime is 1211122202119. The next prime is 1211122202141. The reversal of 1211122202122 is 2212022211121.

It is a super-3 number, since 3×1211122202122³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1211122202122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42242472 + ... + 42271132.

It is an arithmetic number, because the mean of its divisors is an integer number (65460453912).

Almost surely, 2^{1211122202122} is an apocalyptic number.

1211122202122 is a deficient number, since it is larger than the sum of its proper divisors (883612323062).

1211122202122 is a wasteful number, since it uses less digits than its factorization.

1211122202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55494.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1211122202122 its reverse (2212022211121), we get a palindrome (3423144413243).

The spelling of 1211122202122 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, two hundred two thousand, one hundred twenty-two".