221002021220111 has 8 divisors (see below), whose sum is σ = 221425269591120. Its totient is φ = 220578775454592.

The previous prime is 221002021220089. The next prime is 221002021220129. The reversal of 221002021220111 is 111022120200122.

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 221002021220111 - 2²² = 221002017025807 is a prime.

It is a super-2 number, since 2×221002021220111² (a number of 29 digits) contains 22 as substring.

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 221002021220111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002021220161) 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, 320761661 + ... + 321449913.

It is an arithmetic number, because the mean of its divisors is an integer number (27678158698890).

Almost surely, 2^{221002021220111} is an apocalyptic number.

221002021220111 is a deficient number, since it is larger than the sum of its proper divisors (423248371009).

221002021220111 is an equidigital number, since it uses as much as digits as its factorization.

221002021220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302745.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221002021220111 its reverse (111022120200122), we get a palindrome (332024141420233).

The spelling of 221002021220111 in words is "two hundred twenty-one trillion, two billion, twenty-one million, two hundred twenty thousand, one hundred eleven".