1201222111222 has 128 divisors (see below), whose sum is σ = 2253187842048. Its totient is φ = 469028102400.

The previous prime is 1201222111211. The next prime is 1201222111237. The reversal of 1201222111222 is 2221112221021.

It is a self number, because there is not a number n which added to its sum of digits gives 1201222111222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 416078263 + ... + 416081149.

It is an arithmetic number, because the mean of its divisors is an integer number (17603030016).

Almost surely, 2^{1201222111222} is an apocalyptic number.

1201222111222 is a deficient number, since it is larger than the sum of its proper divisors (1051965730826).

1201222111222 is a wasteful number, since it uses less digits than its factorization.

1201222111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594.

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

Adding to 1201222111222 its reverse (2221112221021), we get a palindrome (3422334332243).

The spelling of 1201222111222 in words is "one trillion, two hundred one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-two".