1200220001211 has 64 divisors (see below), whose sum is σ = 2040044544000. Its totient is φ = 622218189600.

The previous prime is 1200220001137. The next prime is 1200220001293. The reversal of 1200220001211 is 1121000220021.

It is not a de Polignac number, because 1200220001211 - 2²⁵ = 1200186446779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200220005211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5449650 + ... + 5665608.

It is an arithmetic number, because the mean of its divisors is an integer number (31875696000).

Almost surely, 2^{1200220001211} is an apocalyptic number.

1200220001211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1200220001211 is a deficient number, since it is larger than the sum of its proper divisors (839824542789).

1200220001211 is a wasteful number, since it uses less digits than its factorization.

1200220001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216485 (or 216471 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1200220001211 its reverse (1121000220021), we get a palindrome (2321220221232).

The spelling of 1200220001211 in words is "one trillion, two hundred billion, two hundred twenty million, one thousand, two hundred eleven".