1221102210011 has 8 divisors (see below), whose sum is σ = 1329693877200. Its totient is φ = 1116942855840.

The previous prime is 1221102210007. The next prime is 1221102210017. The reversal of 1221102210011 is 1100122011221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221102210011 - 2² = 1221102210007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221102210017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1108077680 + ... + 1108078781.

It is an arithmetic number, because the mean of its divisors is an integer number (166211734650).

Almost surely, 2^{1221102210011} is an apocalyptic number.

1221102210011 is a deficient number, since it is larger than the sum of its proper divisors (108591667189).

1221102210011 is a wasteful number, since it uses less digits than its factorization.

1221102210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216156509.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1221102210011 its reverse (1100122011221), we get a palindrome (2321224221232).

The spelling of 1221102210011 in words is "one trillion, two hundred twenty-one billion, one hundred two million, two hundred ten thousand, eleven".