221222001011 has 32 divisors (see below), whose sum is σ = 263892142080. Its totient is φ = 183091622400.

The previous prime is 221222000983. The next prime is 221222001017. The reversal of 221222001011 is 110100222122.

It is a cyclic number.

It is not a de Polignac number, because 221222001011 - 2¹⁰ = 221221999987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221222001017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14943065 + ... + 14957861.

It is an arithmetic number, because the mean of its divisors is an integer number (8246629440).

Almost surely, 2^221222001011 is an apocalyptic number.

221222001011 is a deficient number, since it is larger than the sum of its proper divisors (42670141069).

221222001011 is a wasteful number, since it uses less digits than its factorization.

221222001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17435.

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

Adding to 221222001011 its reverse (110100222122), we get a palindrome (331322223133).

The spelling of 221222001011 in words is "two hundred twenty-one billion, two hundred twenty-two million, one thousand, eleven".