1211214413 has 4 divisors (see below), whose sum is σ = 1274962560. Its totient is φ = 1147466268.

The previous prime is 1211214401. The next prime is 1211214421. The reversal of 1211214413 is 3144121121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1211214413 - 2⁸ = 1211214157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211214463) 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, 31874045 + ... + 31874082.

It is an arithmetic number, because the mean of its divisors is an integer number (318740640).

Almost surely, 2^1211214413 is an apocalyptic number.

It is an amenable number.

1211214413 is a deficient number, since it is larger than the sum of its proper divisors (63748147).

1211214413 is an equidigital number, since it uses as much as digits as its factorization.

1211214413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63748146.

The product of its digits is 192, while the sum is 20.

The square root of 1211214413 is about 34802.5058436889. The cubic root of 1211214413 is about 1065.9586137685.

Adding to 1211214413 its reverse (3144121121), we get a palindrome (4355335534).

The spelling of 1211214413 in words is "one billion, two hundred eleven million, two hundred fourteen thousand, four hundred thirteen".