1220022223 has 4 divisors (see below), whose sum is σ = 1394311120. Its totient is φ = 1045733328.

The previous prime is 1220022203. The next prime is 1220022247. The reversal of 1220022223 is 3222200221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3222200221 = 15349 ⋅209929.

It is a cyclic number.

It is not a de Polignac number, because 1220022223 - 2⁵ = 1220022191 is a prime.

It is a super-2 number, since 2×1220022223² = 2976908449227723458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220022197 and 1220022206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220022203) 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, 87144438 + ... + 87144451.

It is an arithmetic number, because the mean of its divisors is an integer number (348577780).

Almost surely, 2^1220022223 is an apocalyptic number.

1220022223 is a deficient number, since it is larger than the sum of its proper divisors (174288897).

1220022223 is an equidigital number, since it uses as much as digits as its factorization.

1220022223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174288896.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1220022223 is about 34928.8165130169. The cubic root of 1220022223 is about 1068.5362180702.

Adding to 1220022223 its reverse (3222200221), we get a palindrome (4442222444).

The spelling of 1220022223 in words is "one billion, two hundred twenty million, twenty-two thousand, two hundred twenty-three".