1210201211 has 4 divisors (see below), whose sum is σ = 1210283400. Its totient is φ = 1210119024.

The previous prime is 1210201199. The next prime is 1210201229. The reversal of 1210201211 is 1121020121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1210201211 - 2²⁶ = 1143092347 is a prime.

It is a super-2 number, since 2×1210201211² = 2929173942211733042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210201192 and 1210201201.

It is not an unprimeable number, because it can be changed into a prime (1210206211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12266 + ... + 50703.

It is an arithmetic number, because the mean of its divisors is an integer number (302570850).

Almost surely, 2^1210201211 is an apocalyptic number.

1210201211 is a deficient number, since it is larger than the sum of its proper divisors (82189).

1210201211 is an equidigital number, since it uses as much as digits as its factorization.

1210201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82188.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1210201211 is about 34787.9463463999. The cubic root of 1210201211 is about 1065.6612998542.

Adding to 1210201211 its reverse (1121020121), we get a palindrome (2331221332).

The spelling of 1210201211 in words is "one billion, two hundred ten million, two hundred one thousand, two hundred eleven".