221220102012011 has 8 divisors (see below), whose sum is σ = 222549759532800. Its totient is φ = 219890503851688.

The previous prime is 221220102012001. The next prime is 221220102012047. The reversal of 221220102012011 is 110210201022122.

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 221220102012011 - 2⁶ = 221220102011947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221220102012001) 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, 7352951 + ... + 22282416.

It is an arithmetic number, because the mean of its divisors is an integer number (27818719941600).

Almost surely, 2^{221220102012011} is an apocalyptic number.

221220102012011 is a deficient number, since it is larger than the sum of its proper divisors (1329657520789).

221220102012011 is a wasteful number, since it uses less digits than its factorization.

221220102012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29680233.

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

Adding to 221220102012011 its reverse (110210201022122), we get a palindrome (331430303034133).

The spelling of 221220102012011 in words is "two hundred twenty-one trillion, two hundred twenty billion, one hundred two million, twelve thousand, eleven".