221202211121011 has 8 divisors (see below), whose sum is σ = 223232042013200. Its totient is φ = 219172388461920.

The previous prime is 221202211120909. The next prime is 221202211121071. The reversal of 221202211121011 is 110121112202122.

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 221202211121011 - 2¹⁷ = 221202210989939 is a prime.

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 221202211121011.

It is not an unprimeable number, because it can be changed into a prime (221202211121071) 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, 60647941 + ... + 64191721.

It is an arithmetic number, because the mean of its divisors is an integer number (27904005251650).

Almost surely, 2^{221202211121011} is an apocalyptic number.

221202211121011 is a deficient number, since it is larger than the sum of its proper divisors (2029830892189).

221202211121011 is a wasteful number, since it uses less digits than its factorization.

221202211121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4116549.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221202211121011 its reverse (110121112202122), we get a palindrome (331323323323133).

The spelling of 221202211121011 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred eleven million, one hundred twenty-one thousand, eleven".