11220012101 has 8 divisors (see below), whose sum is σ = 11621280600. Its totient is φ = 10819701760.

The previous prime is 11220012049. The next prime is 11220012131. The reversal of 11220012101 is 10121002211.

It can be written as a sum of positive squares in 4 ways, for example, as 3280311076 + 7939701025 = 57274^2 + 89105^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11220012101 - 2²² = 11215817797 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 (11220012131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215660 + ... + 262581.

It is an arithmetic number, because the mean of its divisors is an integer number (1452660075).

Almost surely, 2^11220012101 is an apocalyptic number.

It is an amenable number.

11220012101 is a deficient number, since it is larger than the sum of its proper divisors (401268499).

11220012101 is an equidigital number, since it uses as much as digits as its factorization.

11220012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479079.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11220012101 its reverse (10121002211), we get a palindrome (21341014312).

The spelling of 11220012101 in words is "eleven billion, two hundred twenty million, twelve thousand, one hundred one".