13220202011 has 4 divisors (see below), whose sum is σ = 13220968392. Its totient is φ = 13219435632.

The previous prime is 13220202007. The next prime is 13220202041. The reversal of 13220202011 is 11020202231.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13220202011 - 2² = 13220202007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13220202041) 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, 356705 + ... + 392018.

It is an arithmetic number, because the mean of its divisors is an integer number (3305242098).

Almost surely, 2^13220202011 is an apocalyptic number.

13220202011 is a deficient number, since it is larger than the sum of its proper divisors (766381).

13220202011 is an equidigital number, since it uses as much as digits as its factorization.

13220202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766380.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 13220202011 its reverse (11020202231), we get a palindrome (24240404242).

The spelling of 13220202011 in words is "thirteen billion, two hundred twenty million, two hundred two thousand, eleven".