124543481221 has 8 divisors (see below), whose sum is σ = 127937282040. Its totient is φ = 121151141568.

The previous prime is 124543481177. The next prime is 124543481239. The reversal of 124543481221 is 122184345421.

It can be written as a sum of positive squares in 4 ways, for example, as 8867988900 + 115675492321 = 94170^2 + 340111^2 .

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 124543481221 - 2¹⁵ = 124543448453 is a prime.

It is a super-2 number, since 2×124543481221² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124543481021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191386 + ... + 534523.

It is an arithmetic number, because the mean of its divisors is an integer number (15992160255).

Almost surely, 2^124543481221 is an apocalyptic number.

It is an amenable number.

124543481221 is a deficient number, since it is larger than the sum of its proper divisors (3393800819).

124543481221 is an equidigital number, since it uses as much as digits as its factorization.

124543481221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730583.

The product of its digits is 61440, while the sum is 37.

The spelling of 124543481221 in words is "one hundred twenty-four billion, five hundred forty-three million, four hundred eighty-one thousand, two hundred twenty-one".