2220122000221 has 8 divisors (see below), whose sum is σ = 2221484268024. Its totient is φ = 2218759987200.

The previous prime is 2220122000183. The next prime is 2220122000269. The reversal of 2220122000221 is 1220002210222.

It can be written as a sum of positive squares in 4 ways, for example, as 41457439321 + 2178664560900 = 203611^2 + 1476030^2 .

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 2220122000221 - 2³⁷ = 2082683046749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220122000195 and 2220122000204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220122003221) 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, 19115301 + ... + 19231093.

It is an arithmetic number, because the mean of its divisors is an integer number (277685533503).

Almost surely, 2^{2220122000221} is an apocalyptic number.

It is an amenable number.

2220122000221 is a deficient number, since it is larger than the sum of its proper divisors (1362267803).

2220122000221 is a wasteful number, since it uses less digits than its factorization.

2220122000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127391.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2220122000221 its reverse (1220002210222), we get a palindrome (3440124210443).

The spelling of 2220122000221 in words is "two trillion, two hundred twenty billion, one hundred twenty-two million, two hundred twenty-one", and thus it is an aban number.