1212401411 has 4 divisors (see below), whose sum is σ = 1305663072. Its totient is φ = 1119139752.

The previous prime is 1212401401. The next prime is 1212401417. The reversal of 1212401411 is 1141042121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1141042121 = 23 ⋅49610527.

It is a cyclic number.

It is not a de Polignac number, because 1212401411 - 2¹⁸ = 1212139267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212401411.

It is not an unprimeable number, because it can be changed into a prime (1212401417) 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, 46630811 + ... + 46630836.

It is an arithmetic number, because the mean of its divisors is an integer number (326415768).

Almost surely, 2^1212401411 is an apocalyptic number.

1212401411 is a deficient number, since it is larger than the sum of its proper divisors (93261661).

1212401411 is an equidigital number, since it uses as much as digits as its factorization.

1212401411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93261660.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1212401411 is about 34819.5550086442. Note that the first 3 decimals coincide. The cubic root of 1212401411 is about 1066.3067155367.

Adding to 1212401411 its reverse (1141042121), we get a palindrome (2353443532).

The spelling of 1212401411 in words is "one billion, two hundred twelve million, four hundred one thousand, four hundred eleven".