12220202101 has 4 divisors (see below), whose sum is σ = 12220680492. Its totient is φ = 12219723712.

The previous prime is 12220202023. The next prime is 12220202119. The reversal of 12220202101 is 10120202221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10120202221 = 17 ⋅595306013.

It can be written as a sum of positive squares in 2 ways, for example, as 4179493201 + 8040708900 = 64649^2 + 89670^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220202101 - 2¹¹ = 12220200053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220202171) 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, 198580 + ... + 252733.

It is an arithmetic number, because the mean of its divisors is an integer number (3055170123).

Almost surely, 2^12220202101 is an apocalyptic number.

It is an amenable number.

12220202101 is a deficient number, since it is larger than the sum of its proper divisors (478391).

12220202101 is an equidigital number, since it uses as much as digits as its factorization.

12220202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478390.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12220202101 its reverse (10120202221), we get a palindrome (22340404322).

The spelling of 12220202101 in words is "twelve billion, two hundred twenty million, two hundred two thousand, one hundred one".