124031441221 has 4 divisors (see below), whose sum is σ = 128308387500. Its totient is φ = 119754494944.

The previous prime is 124031441123. The next prime is 124031441263. The reversal of 124031441221 is 122144130421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122144130421 = 7159 ⋅17061619.

It can be written as a sum of positive squares in 2 ways, for example, as 21753005121 + 102278436100 = 147489^2 + 319810^2 .

It is a cyclic number.

It is not a de Polignac number, because 124031441221 - 2¹⁷ = 124031310149 is a prime.

It is a super-2 number, since 2×124031441221² (a number of 23 digits) 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 (124031444221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2138473096 + ... + 2138473153.

It is an arithmetic number, because the mean of its divisors is an integer number (32077096875).

Almost surely, 2^124031441221 is an apocalyptic number.

It is an amenable number.

124031441221 is a deficient number, since it is larger than the sum of its proper divisors (4276946279).

124031441221 is an equidigital number, since it uses as much as digits as its factorization.

124031441221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4276946278.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 124031441221 its reverse (122144130421), we get a palindrome (246175571642).

The spelling of 124031441221 in words is "one hundred twenty-four billion, thirty-one million, four hundred forty-one thousand, two hundred twenty-one".