2221220212223 has 4 divisors (see below), whose sum is σ = 2221224490128. Its totient is φ = 2221215934320.

The previous prime is 2221220212207. The next prime is 2221220212231. The reversal of 2221220212223 is 3222120221222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2221220212223 - 2⁴ = 2221220212207 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 (2221220212423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1231886 + ... + 2441307.

It is an arithmetic number, because the mean of its divisors is an integer number (555306122532).

Almost surely, 2^{2221220212223} is an apocalyptic number.

2221220212223 is a deficient number, since it is larger than the sum of its proper divisors (4277905).

2221220212223 is an equidigital number, since it uses as much as digits as its factorization.

2221220212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277904.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 2221220212223 its reverse (3222120221222), we get a palindrome (5443340433445).

The spelling of 2221220212223 in words is "two trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, two hundred twenty-three".