121144537 has 2 divisors, whose sum is σ = 121144538. Its totient is φ = 121144536.

The previous prime is 121144493. The next prime is 121144547. The reversal of 121144537 is 735441121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117744201 + 3400336 = 10851^2 + 1844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121144537 is a prime.

It is a super-3 number, since 3×121144537³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121144547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60572268 + 60572269.

It is an arithmetic number, because the mean of its divisors is an integer number (60572269).

Almost surely, 2^121144537 is an apocalyptic number.

It is an amenable number.

121144537 is a deficient number, since it is larger than the sum of its proper divisors (1).

121144537 is an equidigital number, since it uses as much as digits as its factorization.

121144537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 28.

The square root of 121144537 is about 11006.5679028478. The cubic root of 121144537 is about 494.8056060819.

Adding to 121144537 its reverse (735441121), we get a palindrome (856585658).

The spelling of 121144537 in words is "one hundred twenty-one million, one hundred forty-four thousand, five hundred thirty-seven".