1211410401 has 4 divisors (see below), whose sum is σ = 1615213872. Its totient is φ = 807606932.

The previous prime is 1211410393. The next prime is 1211410423. The reversal of 1211410401 is 1040141121.

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 1211410401 - 2³ = 1211410393 is a prime.

It is a super-3 number, since 3×1211410401³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211410441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201901731 + ... + 201901736.

It is an arithmetic number, because the mean of its divisors is an integer number (403803468).

Almost surely, 2^1211410401 is an apocalyptic number.

It is an amenable number.

1211410401 is a deficient number, since it is larger than the sum of its proper divisors (403803471).

1211410401 is an equidigital number, since it uses as much as digits as its factorization.

1211410401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403803470.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1211410401 is about 34805.3214465834. The cubic root of 1211410401 is about 1066.0161053316.

Adding to 1211410401 its reverse (1040141121), we get a palindrome (2251551522).

The spelling of 1211410401 in words is "one billion, two hundred eleven million, four hundred ten thousand, four hundred one".