121145524 has 6 divisors (see below), whose sum is σ = 212004674. Its totient is φ = 60572760.

The previous prime is 121145513. The next prime is 121145527. The reversal of 121145524 is 425541121.

It can be written as a sum of positive squares in only one way, i.e., 103673124 + 17472400 = 10182^2 + 4180^2 .

It is a super-3 number, since 3×121145524³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121145527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15143187 + ... + 15143194.

Almost surely, 2^121145524 is an apocalyptic number.

It is an amenable number.

121145524 is a deficient number, since it is larger than the sum of its proper divisors (90859150).

121145524 is a wasteful number, since it uses less digits than its factorization.

121145524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30286385 (or 30286383 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 121145524 is about 11006.6127396216. The cubic root of 121145524 is about 494.8069498537.

Adding to 121145524 its reverse (425541121), we get a palindrome (546686645).

The spelling of 121145524 in words is "one hundred twenty-one million, one hundred forty-five thousand, five hundred twenty-four".