221102020111011 has 8 divisors (see below), whose sum is σ = 317479823749200. Its totient is φ = 136062781606752.

The previous prime is 221102020110991. The next prime is 221102020111061. The reversal of 221102020111011 is 110111020201122.

It is a happy number.

221102020111011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 221102020111011 - 2¹⁸ = 221102019848867 is a prime.

It is a super-2 number, since 2×221102020111011² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221102020111061) 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, 2834641283436 + ... + 2834641283513.

It is an arithmetic number, because the mean of its divisors is an integer number (39684977968650).

Almost surely, 2^{221102020111011} is an apocalyptic number.

221102020111011 is a deficient number, since it is larger than the sum of its proper divisors (96377803638189).

221102020111011 is a wasteful number, since it uses less digits than its factorization.

221102020111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5669282566965.

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

Adding to 221102020111011 its reverse (110111020201122), we get a palindrome (331213040312133).

The spelling of 221102020111011 in words is "two hundred twenty-one trillion, one hundred two billion, twenty million, one hundred eleven thousand, eleven".