1200110222221 has 4 divisors (see below), whose sum is σ = 1200448570912. Its totient is φ = 1199771873532.

The previous prime is 1200110222197. The next prime is 1200110222231. The reversal of 1200110222221 is 1222220110021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1200110222221 - 2¹¹ = 1200110220173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200110222195 and 1200110222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200110222231) 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, 169169025 + ... + 169176118.

It is an arithmetic number, because the mean of its divisors is an integer number (300112142728).

Almost surely, 2^{1200110222221} is an apocalyptic number.

It is an amenable number.

1200110222221 is a deficient number, since it is larger than the sum of its proper divisors (338348691).

1200110222221 is an equidigital number, since it uses as much as digits as its factorization.

1200110222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338348690.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1200110222221 its reverse (1222220110021), we get a palindrome (2422330332242).

The spelling of 1200110222221 in words is "one trillion, two hundred billion, one hundred ten million, two hundred twenty-two thousand, two hundred twenty-one".