121211121211222 has 64 divisors (see below), whose sum is σ = 217354314820608. Its totient is φ = 49567826880000.

The previous prime is 121211121211211. The next prime is 121211121211333. The reversal of 121211121211222 is 222112121112121.

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 = 121211121211193 and 121211121211202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249594322 + ... + 250079482.

It is an arithmetic number, because the mean of its divisors is an integer number (3396161169072).

Almost surely, 2^{121211121211222} is an apocalyptic number.

121211121211222 is a deficient number, since it is larger than the sum of its proper divisors (96143193609386).

121211121211222 is a wasteful number, since it uses less digits than its factorization.

121211121211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487085.

The product of its digits is 128, while the sum is 22.

Adding to 121211121211222 its reverse (222112121112121), we get a palindrome (343323242323343).

The spelling of 121211121211222 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred twenty-one million, two hundred eleven thousand, two hundred twenty-two".