1201221221102 has 24 divisors (see below), whose sum is σ = 2112008544360. Its totient is φ = 510879248880.

The previous prime is 1201221221077. The next prime is 1201221221197. The reversal of 1201221221102 is 2011221221021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46770977 + ... + 46796652.

It is an arithmetic number, because the mean of its divisors is an integer number (88000356015).

Almost surely, 2^{1201221221102} is an apocalyptic number.

1201221221102 is a deficient number, since it is larger than the sum of its proper divisors (910787323258).

1201221221102 is a wasteful number, since it uses less digits than its factorization.

1201221221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93567776 (or 93567769 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1201221221102 its reverse (2011221221021), we get a palindrome (3212442442123).

The spelling of 1201221221102 in words is "one trillion, two hundred one billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred two".