1211553041 has 8 divisors (see below), whose sum is σ = 1228803744. Its totient is φ = 1194320160.

The previous prime is 1211553029. The next prime is 1211553071. The reversal of 1211553041 is 1403551121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211553041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211552998 and 1211553016.

It is not an unprimeable number, because it can be changed into a prime (1211553001) 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 7 ways as a sum of consecutive naturals, for example, 194546 + ... + 200676.

It is an arithmetic number, because the mean of its divisors is an integer number (153600468).

Almost surely, 2^1211553041 is an apocalyptic number.

It is an amenable number.

1211553041 is a deficient number, since it is larger than the sum of its proper divisors (17250703).

1211553041 is an equidigital number, since it uses as much as digits as its factorization.

1211553041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8911.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1211553041 is about 34807.3704982149. The cubic root of 1211553041 is about 1066.0579437731.

It can be divided in two parts, 12115 and 53041, that added together give a palindrome (65156).

The spelling of 1211553041 in words is "one billion, two hundred eleven million, five hundred fifty-three thousand, forty-one".