11220101221 has 8 divisors (see below), whose sum is σ = 12826149120. Its totient is φ = 9614847408.

The previous prime is 11220101173. The next prime is 11220101231. The reversal of 11220101221 is 12210102211.

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 11220101221 - 2²³ = 11211712613 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 (11220101231) 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, 167926 + ... + 225031.

It is an arithmetic number, because the mean of its divisors is an integer number (1603268640).

Almost surely, 2^11220101221 is an apocalyptic number.

It is an amenable number.

11220101221 is a deficient number, since it is larger than the sum of its proper divisors (1606047899).

11220101221 is an equidigital number, since it uses as much as digits as its factorization.

11220101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397043.

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

Adding to 11220101221 its reverse (12210102211), we get a palindrome (23430203432).

The spelling of 11220101221 in words is "eleven billion, two hundred twenty million, one hundred one thousand, two hundred twenty-one".