201100102221 has 16 divisors (see below), whose sum is σ = 274829899968. Its totient is φ = 130758144000.

The previous prime is 201100102211. The next prime is 201100102267. The reversal of 201100102221 is 122201001102.

It is not a de Polignac number, because 201100102221 - 2¹⁹ = 201099577933 is a prime.

It is a super-2 number, since 2×201100102221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201100102197 and 201100102206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201100102211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4932660 + ... + 4973261.

It is an arithmetic number, because the mean of its divisors is an integer number (17176868748).

Almost surely, 2^201100102221 is an apocalyptic number.

It is an amenable number.

201100102221 is a deficient number, since it is larger than the sum of its proper divisors (73729797747).

201100102221 is a wasteful number, since it uses less digits than its factorization.

201100102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9906092.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201100102221 its reverse (122201001102), we get a palindrome (323301103323).

The spelling of 201100102221 in words is "two hundred one billion, one hundred million, one hundred two thousand, two hundred twenty-one".