1147221701 has 4 divisors (see below), whose sum is σ = 1186781100. Its totient is φ = 1107662304.

The previous prime is 1147221689. The next prime is 1147221709. The reversal of 1147221701 is 1071227411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1071227411 = 787 ⋅1361153.

It can be written as a sum of positive squares in 2 ways, for example, as 282273601 + 864948100 = 16801^2 + 29410^2 .

It is a cyclic number.

It is not a de Polignac number, because 1147221701 - 2¹⁰ = 1147220677 is a prime.

It is a super-2 number, since 2×1147221701² = 2632235262490666802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147221709) 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, 19779656 + ... + 19779713.

It is an arithmetic number, because the mean of its divisors is an integer number (296695275).

Almost surely, 2^1147221701 is an apocalyptic number.

It is an amenable number.

1147221701 is a deficient number, since it is larger than the sum of its proper divisors (39559399).

1147221701 is an equidigital number, since it uses as much as digits as its factorization.

1147221701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39559398.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 1147221701 is about 33870.6613605344. The cubic root of 1147221701 is about 1046.8451641676.

The spelling of 1147221701 in words is "one billion, one hundred forty-seven million, two hundred twenty-one thousand, seven hundred one".