221201201101 has 4 divisors (see below), whose sum is σ = 232843369600. Its totient is φ = 209559032604.

The previous prime is 221201201099. The next prime is 221201201113. The reversal of 221201201101 is 101102102122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221201201101 - 2¹ = 221201201099 is a prime.

It is a super-2 number, since 2×221201201101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201201141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5821084221 + ... + 5821084258.

It is an arithmetic number, because the mean of its divisors is an integer number (58210842400).

Almost surely, 2^221201201101 is an apocalyptic number.

It is an amenable number.

221201201101 is a deficient number, since it is larger than the sum of its proper divisors (11642168499).

221201201101 is a wasteful number, since it uses less digits than its factorization.

221201201101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11642168498.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221201201101 its reverse (101102102122), we get a palindrome (322303303223).

It can be divided in two parts, 22120 and 1201101, that added together give a palindrome (1223221).

The spelling of 221201201101 in words is "two hundred twenty-one billion, two hundred one million, two hundred one thousand, one hundred one".