212220011220221 has 8 divisors (see below), whose sum is σ = 212834639090304. Its totient is φ = 211605581023200.

The previous prime is 212220011220181. The next prime is 212220011220251. The reversal of 212220011220221 is 122022110022212.

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 212220011220221 - 2³⁰ = 212218937478397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212220011220193 and 212220011220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220011220251) 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, 47267840 + ... + 51562473.

It is an arithmetic number, because the mean of its divisors is an integer number (26604329886288).

Almost surely, 2^{212220011220221} is an apocalyptic number.

It is an amenable number.

212220011220221 is a deficient number, since it is larger than the sum of its proper divisors (614627870083).

212220011220221 is an equidigital number, since it uses as much as digits as its factorization.

212220011220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98836531.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 212220011220221 its reverse (122022110022212), we get a palindrome (334242121242433).

The spelling of 212220011220221 in words is "two hundred twelve trillion, two hundred twenty billion, eleven million, two hundred twenty thousand, two hundred twenty-one".