1210521041 has 4 divisors (see below), whose sum is σ = 1210600500. Its totient is φ = 1210441584.

The previous prime is 1210521031. The next prime is 1210521071. The reversal of 1210521041 is 1401250121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 566630416 + 643890625 = 23804^2 + 25375^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210521041 - 2¹⁴ = 1210504657 is a prime.

It is a super-3 number, since 3×1210521041³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210521001) 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, 8906 + ... + 50003.

It is an arithmetic number, because the mean of its divisors is an integer number (302650125).

Almost surely, 2^1210521041 is an apocalyptic number.

It is an amenable number.

1210521041 is a deficient number, since it is larger than the sum of its proper divisors (79459).

1210521041 is an equidigital number, since it uses as much as digits as its factorization.

1210521041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79458.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1210521041 is about 34792.5428935569. The cubic root of 1210521041 is about 1065.7551686616.

Adding to 1210521041 its reverse (1401250121), we get a palindrome (2611771162).

The spelling of 1210521041 in words is "one billion, two hundred ten million, five hundred twenty-one thousand, forty-one".