121124531 has 4 divisors (see below), whose sum is σ = 132135864. Its totient is φ = 110113200.

The previous prime is 121124527. The next prime is 121124551. The reversal of 121124531 is 135421121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121124531 - 2² = 121124527 is a prime.

It is a super-2 number, since 2×121124531² = 29342304019939922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121124501) 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, 5505650 + ... + 5505671.

It is an arithmetic number, because the mean of its divisors is an integer number (33033966).

Almost surely, 2^121124531 is an apocalyptic number.

121124531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121124531 is a deficient number, since it is larger than the sum of its proper divisors (11011333).

121124531 is a wasteful number, since it uses less digits than its factorization.

121124531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11011332.

The product of its digits is 240, while the sum is 20.

The square root of 121124531 is about 11005.6590443281. The cubic root of 121124531 is about 494.7783669229.

Adding to 121124531 its reverse (135421121), we get a palindrome (256545652).

The spelling of 121124531 in words is "one hundred twenty-one million, one hundred twenty-four thousand, five hundred thirty-one".