11221202101 has 4 divisors (see below), whose sum is σ = 11230187500. Its totient is φ = 11212216704.

The previous prime is 11221202093. The next prime is 11221202173. The reversal of 11221202101 is 10120212211.

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 1520922001 + 9700280100 = 38999^2 + 98490^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221202101 - 2³ = 11221202093 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 (11221202701) 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, 4490826 + ... + 4493323.

It is an arithmetic number, because the mean of its divisors is an integer number (2807546875).

Almost surely, 2^11221202101 is an apocalyptic number.

It is an amenable number.

11221202101 is a deficient number, since it is larger than the sum of its proper divisors (8985399).

11221202101 is an equidigital number, since it uses as much as digits as its factorization.

11221202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8985398.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11221202101 its reverse (10120212211), we get a palindrome (21341414312).

The spelling of 11221202101 in words is "eleven billion, two hundred twenty-one million, two hundred two thousand, one hundred one".