1212041541 has 4 divisors (see below), whose sum is σ = 1616055392. Its totient is φ = 808027692.

The previous prime is 1212041527. The next prime is 1212041563. The reversal of 1212041541 is 1451402121.

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 not a de Polignac number, because 1212041541 - 2²¹ = 1209944389 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 (1212049541) 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, 202006921 + ... + 202006926.

It is an arithmetic number, because the mean of its divisors is an integer number (404013848).

Almost surely, 2^1212041541 is an apocalyptic number.

It is an amenable number.

1212041541 is a deficient number, since it is larger than the sum of its proper divisors (404013851).

1212041541 is an equidigital number, since it uses as much as digits as its factorization.

1212041541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404013850.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1212041541 is about 34814.3869829701. The cubic root of 1212041541 is about 1066.2012032403.

Adding to 1212041541 its reverse (1451402121), we get a palindrome (2663443662).

The spelling of 1212041541 in words is "one billion, two hundred twelve million, forty-one thousand, five hundred forty-one".