220121022220111 has 8 divisors (see below), whose sum is σ = 220632361769664. Its totient is φ = 219609685532160.

The previous prime is 220121022220109. The next prime is 220121022220181. The reversal of 220121022220111 is 111022220121022.

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 220121022220111 - 2¹ = 220121022220109 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 (220121022220181) 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, 295929415 + ... + 296672311.

It is an arithmetic number, because the mean of its divisors is an integer number (27579045221208).

Almost surely, 2^{220121022220111} is an apocalyptic number.

220121022220111 is a deficient number, since it is larger than the sum of its proper divisors (511339549553).

220121022220111 is an equidigital number, since it uses as much as digits as its factorization.

220121022220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430801.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 220121022220111 its reverse (111022220121022), we get a palindrome (331143242341133).

The spelling of 220121022220111 in words is "two hundred twenty trillion, one hundred twenty-one billion, twenty-two million, two hundred twenty thousand, one hundred eleven".