221212000011011 has 8 divisors (see below), whose sum is σ = 244408143235104. Its totient is φ = 199147375968640.

The previous prime is 221212000011001. The next prime is 221212000011071. The reversal of 221212000011011 is 110110000212122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221212000011011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221212000011001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282879795020 + ... + 282879795801.

It is an arithmetic number, because the mean of its divisors is an integer number (30551017904388).

Almost surely, 2^{221212000011011} is an apocalyptic number.

221212000011011 is a deficient number, since it is larger than the sum of its proper divisors (23196143224093).

221212000011011 is a wasteful number, since it uses less digits than its factorization.

221212000011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565759590861.

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

Adding to 221212000011011 its reverse (110110000212122), we get a palindrome (331322000223133).

The spelling of 221212000011011 in words is "two hundred twenty-one trillion, two hundred twelve billion, eleven thousand, eleven".