201202202111221 has 4 divisors (see below), whose sum is σ = 207692595727744. Its totient is φ = 194711808494700.

The previous prime is 201202202111189. The next prime is 201202202111293. The reversal of 201202202111221 is 122111202202102.

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 201202202111221 - 2⁵ = 201202202111189 is a prime.

It is a super-2 number, since 2×201202202111221² (a number of 29 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 (201202202181221) 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, 3245196808215 + ... + 3245196808276.

It is an arithmetic number, because the mean of its divisors is an integer number (51923148931936).

Almost surely, 2^{201202202111221} is an apocalyptic number.

It is an amenable number.

201202202111221 is a deficient number, since it is larger than the sum of its proper divisors (6490393616523).

201202202111221 is an equidigital number, since it uses as much as digits as its factorization.

201202202111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6490393616522.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201202202111221 its reverse (122111202202102), we get a palindrome (323313404313323).

The spelling of 201202202111221 in words is "two hundred one trillion, two hundred two billion, two hundred two million, one hundred eleven thousand, two hundred twenty-one".