1200220001210 has 16 divisors (see below), whose sum is σ = 2160451350792. Its totient is φ = 480075700800.

The previous prime is 1200220001137. The next prime is 1200220001293. The reversal of 1200220001210 is 121000220021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 529624429009 + 670595572201 = 727753^2 + 818899^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1200220001191 and 1200220001200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1122281 + ... + 1913100.

Almost surely, 2^{1200220001210} is an apocalyptic number.

1200220001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200220001210 is a deficient number, since it is larger than the sum of its proper divisors (960231349582).

1200220001210 is a wasteful number, since it uses less digits than its factorization.

1200220001210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074929.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1200220001210 its reverse (121000220021), we get a palindrome (1321220221231).

The spelling of 1200220001210 in words is "one trillion, two hundred billion, two hundred twenty million, one thousand, two hundred ten".