1200220022221 has 8 divisors (see below), whose sum is σ = 1366258365504. Its totient is φ = 1043669584320.

The previous prime is 1200220022201. The next prime is 1200220022237. The reversal of 1200220022221 is 1222200220021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1200220022221 - 2⁹ = 1200220021709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200220022195 and 1200220022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200220022201) 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, 2371976076 + ... + 2371976581.

It is an arithmetic number, because the mean of its divisors is an integer number (170782295688).

Almost surely, 2^{1200220022221} is an apocalyptic number.

1200220022221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200220022221 is a deficient number, since it is larger than the sum of its proper divisors (166038343283).

1200220022221 is a wasteful number, since it uses less digits than its factorization.

1200220022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4743952691.

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

Adding to 1200220022221 its reverse (1222200220021), we get a palindrome (2422420242242).

The spelling of 1200220022221 in words is "one trillion, two hundred billion, two hundred twenty million, twenty-two thousand, two hundred twenty-one".