1201222211 has 6 divisors (see below), whose sum is σ = 1397340180. Its totient is φ = 1029618996.

The previous prime is 1201222207. The next prime is 1201222259. The reversal of 1201222211 is 1122221021.

It is not a de Polignac number, because 1201222211 - 2² = 1201222207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201222271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12257321 + ... + 12257418.

It is an arithmetic number, because the mean of its divisors is an integer number (232890030).

Almost surely, 2^1201222211 is an apocalyptic number.

1201222211 is a deficient number, since it is larger than the sum of its proper divisors (196117969).

1201222211 is an equidigital number, since it uses as much as digits as its factorization.

1201222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24514753 (or 24514746 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1201222211 is about 34658.6527580055. The cubic root of 1201222211 is about 1063.0192225986.

Adding to 1201222211 its reverse (1122221021), we get a palindrome (2323443232).

The spelling of 1201222211 in words is "one billion, two hundred one million, two hundred twenty-two thousand, two hundred eleven".