11011210120221 has 8 divisors (see below), whose sum is σ = 14697019177920. Its totient is φ = 7333103904672.

The previous prime is 11011210120201. The next prime is 11011210120223. The reversal of 11011210120221 is 12202101211011.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-11011210120221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11011210120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011210120223) 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, 1925707201 + ... + 1925712918.

It is an arithmetic number, because the mean of its divisors is an integer number (1837127397240).

Almost surely, 2^{11011210120221} is an apocalyptic number.

It is an amenable number.

11011210120221 is a deficient number, since it is larger than the sum of its proper divisors (3685809057699).

11011210120221 is an equidigital number, since it uses as much as digits as its factorization.

11011210120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3851421075.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11011210120221 its reverse (12202101211011), we get a palindrome (23213311331232).

The spelling of 11011210120221 in words is "eleven trillion, eleven billion, two hundred ten million, one hundred twenty thousand, two hundred twenty-one".