1200220022 has 4 divisors (see below), whose sum is σ = 1800330036. Its totient is φ = 600110010.

The previous prime is 1200220001. The next prime is 1200220031. The reversal of 1200220022 is 2200220021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2200220021 = 40853 ⋅53857.

1200220022 is a modest number, since divided by 220022 gives 12 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1200219985 and 1200220012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300055004 + ... + 300055007.

It is an arithmetic number, because the mean of its divisors is an integer number (450082509).

Almost surely, 2^1200220022 is an apocalyptic number.

1200220022 is a deficient number, since it is larger than the sum of its proper divisors (600110014).

1200220022 is an equidigital number, since it uses as much as digits as its factorization.

1200220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600110013.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1200220022 is about 34644.1917498446. The cubic root of 1200220022 is about 1062.7235119536.

Adding to 1200220022 its reverse (2200220021), we get a palindrome (3400440043).

Subtracting 1200220022 from its reverse (2200220021), we obtain a palindrome (999999999).

The spelling of 1200220022 in words is "one billion, two hundred million, two hundred twenty thousand, twenty-two".