1213202211 has 48 divisors (see below), whose sum is σ = 1844903424. Its totient is φ = 704608128.

The previous prime is 1213202201. The next prime is 1213202219. The reversal of 1213202211 is 1122023121.

It is not a de Polignac number, because 1213202211 - 2¹⁵ = 1213169443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213202219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1541160 + ... + 1541946.

It is an arithmetic number, because the mean of its divisors is an integer number (38435488).

Almost surely, 2^1213202211 is an apocalyptic number.

1213202211 is a deficient number, since it is larger than the sum of its proper divisors (631701213).

1213202211 is a wasteful number, since it uses less digits than its factorization.

1213202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908 (or 879 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1213202211 is about 34831.0523958149. The cubic root of 1213202211 is about 1066.5414316620.

Adding to 1213202211 its reverse (1122023121), we get a palindrome (2335225332).

The spelling of 1213202211 in words is "one billion, two hundred thirteen million, two hundred two thousand, two hundred eleven".