1212420411 has 24 divisors (see below), whose sum is σ = 1775395440. Its totient is φ = 797224896.

The previous prime is 1212420401. The next prime is 1212420431. The reversal of 1212420411 is 1140242121.

1212420411 is a `hidden beast` number, since 1 + 212 + 42 + 0 + 411 = 666.

It is not a de Polignac number, because 1212420411 - 2⁵ = 1212420379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212420401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193321 + ... + 199493.

It is an arithmetic number, because the mean of its divisors is an integer number (73974810).

Almost surely, 2^1212420411 is an apocalyptic number.

1212420411 is a deficient number, since it is larger than the sum of its proper divisors (562975029).

1212420411 is a wasteful number, since it uses less digits than its factorization.

1212420411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475 (or 6472 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1212420411 is about 34819.8278427680. The cubic root of 1212420411 is about 1066.3122856725.

Adding to 1212420411 its reverse (1140242121), we get a palindrome (2352662532).

The spelling of 1212420411 in words is "one billion, two hundred twelve million, four hundred twenty thousand, four hundred eleven".