1151212045 has 8 divisors (see below), whose sum is σ = 1381958424. Its totient is φ = 920633664.

The previous prime is 1151212009. The next prime is 1151212057. The reversal of 1151212045 is 5402121511.

It can be written as a sum of positive squares in 4 ways, for example, as 3493161 + 1147718884 = 1869^2 + 33878^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1151212045 - 2¹⁹ = 1150687757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 26394 + ... + 54763.

It is an arithmetic number, because the mean of its divisors is an integer number (172744803).

Almost surely, 2^1151212045 is an apocalyptic number.

It is an amenable number.

1151212045 is a deficient number, since it is larger than the sum of its proper divisors (230746379).

1151212045 is an equidigital number, since it uses as much as digits as its factorization.

1151212045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83999.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1151212045 is about 33929.5158379839. The cubic root of 1151212045 is about 1048.0574954981.

Adding to 1151212045 its reverse (5402121511), we get a palindrome (6553333556).

The spelling of 1151212045 in words is "one billion, one hundred fifty-one million, two hundred twelve thousand, forty-five".