221020112102011 has 8 divisors (see below), whose sum is σ = 221545725558624. Its totient is φ = 220494501608640.

The previous prime is 221020112101967. The next prime is 221020112102017. The reversal of 221020112102011 is 110201211020122.

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-221020112102011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221020112102017) 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, 246807615 + ... + 247701511.

It is an arithmetic number, because the mean of its divisors is an integer number (27693215694828).

Almost surely, 2^{221020112102011} is an apocalyptic number.

221020112102011 is a deficient number, since it is larger than the sum of its proper divisors (525613456613).

221020112102011 is an equidigital number, since it uses as much as digits as its factorization.

221020112102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481621.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221020112102011 its reverse (110201211020122), we get a palindrome (331221323122133).

The spelling of 221020112102011 in words is "two hundred twenty-one trillion, twenty billion, one hundred twelve million, one hundred two thousand, eleven".