1200120222 has 64 divisors (see below), whose sum is σ = 2798106624. Its totient is φ = 336061440.

The previous prime is 1200120217. The next prime is 1200120223. The reversal of 1200120222 is 2220210021.

It is a junction number, because it is equal to n+sod(n) for n = 1200120198 and 1200120207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200120223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 903723 + ... + 905049.

It is an arithmetic number, because the mean of its divisors is an integer number (43720416).

Almost surely, 2^1200120222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200120222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399053312).

1200120222 is an abundant number, since it is smaller than the sum of its proper divisors (1597986402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1200120222 is a wasteful number, since it uses less digits than its factorization.

1200120222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1200120222 is about 34642.7513630197. The cubic root of 1200120222 is about 1062.6940554805.

Adding to 1200120222 its reverse (2220210021), we get a palindrome (3420330243).

It can be divided in two parts, 12001 and 20222, that added together give a palindrome (32223).

The spelling of 1200120222 in words is "one billion, two hundred million, one hundred twenty thousand, two hundred twenty-two".