1200221211 has 16 divisors (see below), whose sum is σ = 1836505088. Its totient is φ = 682992000.

The previous prime is 1200221147. The next prime is 1200221287. The reversal of 1200221211 is 1121220021.

1200221211 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1200221211 - 2⁶ = 1200221147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200221291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113515 + ... + 123636.

It is an arithmetic number, because the mean of its divisors is an integer number (114781568).

Almost surely, 2^1200221211 is an apocalyptic number.

1200221211 is a deficient number, since it is larger than the sum of its proper divisors (636283877).

1200221211 is a wasteful number, since it uses less digits than its factorization.

1200221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237402.

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

The square root of 1200221211 is about 34644.2089100040. The cubic root of 1200221211 is about 1062.7238628831.

Adding to 1200221211 its reverse (1121220021), we get a palindrome (2321441232).

The spelling of 1200221211 in words is "one billion, two hundred million, two hundred twenty-one thousand, two hundred eleven".