221220120221011 has 8 divisors (see below), whose sum is σ = 226321169991264. Its totient is φ = 216174216935040.

The previous prime is 221220120220993. The next prime is 221220120221033. The reversal of 221220120221011 is 110122021022122.

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 221220120221011 - 2³⁹ = 220670364407123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221220120221011.

It is not an unprimeable number, because it can be changed into a prime (221220120221081) 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, 13786612956 + ... + 13786629001.

It is an arithmetic number, because the mean of its divisors is an integer number (28290146248908).

Almost surely, 2^{221220120221011} is an apocalyptic number.

221220120221011 is a deficient number, since it is larger than the sum of its proper divisors (5101049770253).

221220120221011 is a wasteful number, since it uses less digits than its factorization.

221220120221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27573242141.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221220120221011 its reverse (110122021022122), we get a palindrome (331342141243133).

The spelling of 221220120221011 in words is "two hundred twenty-one trillion, two hundred twenty billion, one hundred twenty million, two hundred twenty-one thousand, eleven".