201222201101 has 4 divisors (see below), whose sum is σ = 202085815932. Its totient is φ = 200358586272.

The previous prime is 201222201067. The next prime is 201222201137. The reversal of 201222201101 is 101102222102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76051299076 + 125170902025 = 275774^2 + 353795^2 .

It is a cyclic number.

It is not a de Polignac number, because 201222201101 - 2¹⁰ = 201222200077 is a prime.

It is a super-2 number, since 2×201222201101² (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 (201222201161) 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, 431807066 + ... + 431807531.

It is an arithmetic number, because the mean of its divisors is an integer number (50521453983).

Almost surely, 2^201222201101 is an apocalyptic number.

It is an amenable number.

201222201101 is a deficient number, since it is larger than the sum of its proper divisors (863614831).

201222201101 is an equidigital number, since it uses as much as digits as its factorization.

201222201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863614830.

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

Adding to 201222201101 its reverse (101102222102), we get a palindrome (302324423203).

The spelling of 201222201101 in words is "two hundred one billion, two hundred twenty-two million, two hundred one thousand, one hundred one".