220311152221 has 8 divisors (see below), whose sum is σ = 221328097760. Its totient is φ = 219296150928.

The previous prime is 220311152209. The next prime is 220311152233. The reversal of 220311152221 is 122251113022.

It is an interprime number because it is at equal distance from previous prime (220311152209) and next prime (220311152233).

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 220311152221 - 2¹¹ = 220311150173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220311152192 and 220311152201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220311192221) 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, 258666 + ... + 712411.

It is an arithmetic number, because the mean of its divisors is an integer number (27666012220).

Almost surely, 2^220311152221 is an apocalyptic number.

It is an amenable number.

220311152221 is a deficient number, since it is larger than the sum of its proper divisors (1016945539).

220311152221 is an equidigital number, since it uses as much as digits as its factorization.

220311152221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972123.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 220311152221 its reverse (122251113022), we get a palindrome (342562265243).

The spelling of 220311152221 in words is "two hundred twenty billion, three hundred eleven million, one hundred fifty-two thousand, two hundred twenty-one".