221011301011 has 4 divisors (see below), whose sum is σ = 221079161592. Its totient is φ = 220943440432.

The previous prime is 221011300987. The next prime is 221011301053. The reversal of 221011301011 is 110103110122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110103110122 = 2 ⋅55051555061.

It is a cyclic number.

It is not a de Polignac number, because 221011301011 - 2³³ = 212421366419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221011300982 and 221011301000.

It is not an unprimeable number, because it can be changed into a prime (221011301111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33925405 + ... + 33931918.

It is an arithmetic number, because the mean of its divisors is an integer number (55269790398).

Almost surely, 2^221011301011 is an apocalyptic number.

221011301011 is a deficient number, since it is larger than the sum of its proper divisors (67860581).

221011301011 is an equidigital number, since it uses as much as digits as its factorization.

221011301011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67860580.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 221011301011 its reverse (110103110122), we get a palindrome (331114411133).

The spelling of 221011301011 in words is "two hundred twenty-one billion, eleven million, three hundred one thousand, eleven".