201102210221 has 4 divisors (see below), whose sum is σ = 219384229344. Its totient is φ = 182820191100.

The previous prime is 201102210193. The next prime is 201102210289. The reversal of 201102210221 is 122012201102.

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 a de Polignac number, because none of the positive numbers 2^k-201102210221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201102210196 and 201102210205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201102210121) 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, 9141009545 + ... + 9141009566.

It is an arithmetic number, because the mean of its divisors is an integer number (54846057336).

Almost surely, 2^201102210221 is an apocalyptic number.

It is an amenable number.

201102210221 is a deficient number, since it is larger than the sum of its proper divisors (18282019123).

201102210221 is a wasteful number, since it uses less digits than its factorization.

201102210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18282019122.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201102210221 its reverse (122012201102), we get a palindrome (323114411323).

The spelling of 201102210221 in words is "two hundred one billion, one hundred two million, two hundred ten thousand, two hundred twenty-one".