221001220022111 has 8 divisors (see below), whose sum is σ = 221041246468800. Its totient is φ = 220961195965440.

The previous prime is 221001220022069. The next prime is 221001220022131. The reversal of 221001220022111 is 111220022100122.

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 221001220022111 - 2⁶ = 221001220022047 is a prime.

It is a super-3 number, since 3×221001220022111³ (a number of 44 digits) contains 333 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 221001220022111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221001220022131) 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, 189824855 + ... + 190985543.

It is an arithmetic number, because the mean of its divisors is an integer number (27630155808600).

Almost surely, 2^{221001220022111} is an apocalyptic number.

221001220022111 is a deficient number, since it is larger than the sum of its proper divisors (40026446689).

221001220022111 is a wasteful number, since it uses less digits than its factorization.

221001220022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195009.

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

Adding to 221001220022111 its reverse (111220022100122), we get a palindrome (332221242122233).

The spelling of 221001220022111 in words is "two hundred twenty-one trillion, one billion, two hundred twenty million, twenty-two thousand, one hundred eleven".