1200221220010 has 16 divisors (see below), whose sum is σ = 2160917972136. Its totient is φ = 479972982208.

The previous prime is 1200221219999. The next prime is 1200221220017. The reversal of 1200221220010 is 100221220021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 836516939769 + 363704280241 = 914613^2 + 603079^2 .

It is not an unprimeable number, because it can be changed into a prime (1200221220017) 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, 14394577 + ... + 14477716.

Almost surely, 2^{1200221220010} is an apocalyptic number.

1200221220010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200221220010 is a deficient number, since it is larger than the sum of its proper divisors (960696752126).

1200221220010 is a wasteful number, since it uses less digits than its factorization.

1200221220010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28876457.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1200221220010 its reverse (100221220021), we get a palindrome (1300442440031).

The spelling of 1200221220010 in words is "one trillion, two hundred billion, two hundred twenty-one million, two hundred twenty thousand, ten".