220211101221 has 16 divisors (see below), whose sum is σ = 319725739200. Its totient is φ = 134284808448.

The previous prime is 220211101199. The next prime is 220211101249. The reversal of 220211101221 is 122101112022.

It is not a de Polignac number, because 220211101221 - 2²² = 220206906917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220211101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220211101291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66607876 + ... + 66611181.

It is an arithmetic number, because the mean of its divisors is an integer number (19982858700).

Almost surely, 2^220211101221 is an apocalyptic number.

It is an amenable number.

220211101221 is a deficient number, since it is larger than the sum of its proper divisors (99514637979).

220211101221 is a wasteful number, since it uses less digits than its factorization.

220211101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133219108.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220211101221 its reverse (122101112022), we get a palindrome (342312213243).

The spelling of 220211101221 in words is "two hundred twenty billion, two hundred eleven million, one hundred one thousand, two hundred twenty-one".