1221022200011 has 16 divisors (see below), whose sum is σ = 1247146137024. Its totient is φ = 1195157389824.

The previous prime is 1221022199989. The next prime is 1221022200017. The reversal of 1221022200011 is 1100022201221.

It is a cyclic number.

It is not a de Polignac number, because 1221022200011 - 2¹⁰ = 1221022198987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221022200017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38518010 + ... + 38549696.

It is an arithmetic number, because the mean of its divisors is an integer number (77946633564).

Almost surely, 2^{1221022200011} is an apocalyptic number.

1221022200011 is a deficient number, since it is larger than the sum of its proper divisors (26123937013).

1221022200011 is a wasteful number, since it uses less digits than its factorization.

1221022200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35750.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1221022200011 its reverse (1100022201221), we get a palindrome (2321044401232).

The spelling of 1221022200011 in words is "one trillion, two hundred twenty-one billion, twenty-two million, two hundred thousand, eleven".