121522541 has 16 divisors (see below), whose sum is σ = 144380544. Its totient is φ = 100108224.

The previous prime is 121522517. The next prime is 121522549. The reversal of 121522541 is 145225121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121522541 is a prime.

It is a super-3 number, since 3×121522541³ (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 (121522549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18671 + ... + 24323.

It is an arithmetic number, because the mean of its divisors is an integer number (9023784).

Almost surely, 2^121522541 is an apocalyptic number.

It is an amenable number.

121522541 is a deficient number, since it is larger than the sum of its proper divisors (22858003).

121522541 is an equidigital number, since it uses as much as digits as its factorization.

121522541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5780.

The product of its digits is 800, while the sum is 23.

The square root of 121522541 is about 11023.7262756293. The cubic root of 121522541 is about 495.3197145522.

Adding to 121522541 its reverse (145225121), we get a palindrome (266747662).

The spelling of 121522541 in words is "one hundred twenty-one million, five hundred twenty-two thousand, five hundred forty-one".