221202221011 has 8 divisors (see below), whose sum is σ = 221967464544. Its totient is φ = 220437761280.

The previous prime is 221202220973. The next prime is 221202221047. The reversal of 221202221011 is 110122202122.

It is a happy number.

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 221202221011 - 2²³ = 221193832403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221202221311) 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, 372301 + ... + 762241.

It is an arithmetic number, because the mean of its divisors is an integer number (27745933068).

Almost surely, 2^221202221011 is an apocalyptic number.

221202221011 is a deficient number, since it is larger than the sum of its proper divisors (765243533).

221202221011 is a wasteful number, since it uses less digits than its factorization.

221202221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391901.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221202221011 its reverse (110122202122), we get a palindrome (331324423133).

The spelling of 221202221011 in words is "two hundred twenty-one billion, two hundred two million, two hundred twenty-one thousand, eleven".