221202022021111 has 8 divisors (see below), whose sum is σ = 224515033737344. Its totient is φ = 217889348216760.

The previous prime is 221202022021067. The next prime is 221202022021129. The reversal of 221202022021111 is 111120220202122.

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 221202022021111 - 2⁷ = 221202022020983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202022021171) 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, 83158785 + ... + 85777546.

It is an arithmetic number, because the mean of its divisors is an integer number (28064379217168).

Almost surely, 2^{221202022021111} is an apocalyptic number.

221202022021111 is a deficient number, since it is larger than the sum of its proper divisors (3313011716233).

221202022021111 is a wasteful number, since it uses less digits than its factorization.

221202022021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168955941.

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

Adding to 221202022021111 its reverse (111120220202122), we get a palindrome (332322242223233).

The spelling of 221202022021111 in words is "two hundred twenty-one trillion, two hundred two billion, twenty-two million, twenty-one thousand, one hundred eleven".