1321124101 has 6 divisors (see below), whose sum is σ = 1452144806. Its totient is φ = 1201021800.

The previous prime is 1321124053. The next prime is 1321124107. The reversal of 1321124101 is 1014211231.

It can be written as a sum of positive squares in only one way, i.e., 1185424900 + 135699201 = 34430^2 + 11649^2 .

It is not a de Polignac number, because 1321124101 - 2¹⁵ = 1321091333 is a prime.

It is a super-4 number, since 4×1321124101⁴ (a number of 38 digits) contains 4444 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 (1321124107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5459070 + ... + 5459311.

Almost surely, 2^1321124101 is an apocalyptic number.

1321124101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1321124101 is a deficient number, since it is larger than the sum of its proper divisors (131020705).

1321124101 is a wasteful number, since it uses less digits than its factorization.

1321124101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10918403 (or 10918392 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1321124101 is about 36347.2708879222. The cubic root of 1321124101 is about 1097.2726098401.

Adding to 1321124101 its reverse (1014211231), we get a palindrome (2335335332).

The spelling of 1321124101 in words is "one billion, three hundred twenty-one million, one hundred twenty-four thousand, one hundred one".