121796537 has 2 divisors, whose sum is σ = 121796538. Its totient is φ = 121796536.

The previous prime is 121796533. The next prime is 121796539. The reversal of 121796537 is 735697121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118613881 + 3182656 = 10891^2 + 1784^2 .

It is an emirp because it is prime and its reverse (735697121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121796537 - 2² = 121796533 is a prime.

Together with 121796539, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121796494 and 121796503.

It is not a weakly prime, because it can be changed into another prime (121796531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60898268 + 60898269.

It is an arithmetic number, because the mean of its divisors is an integer number (60898269).

Almost surely, 2^121796537 is an apocalyptic number.

It is an amenable number.

121796537 is a deficient number, since it is larger than the sum of its proper divisors (1).

121796537 is an equidigital number, since it uses as much as digits as its factorization.

121796537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 41.

The square root of 121796537 is about 11036.1468366455. The cubic root of 121796537 is about 495.6916997218.

The spelling of 121796537 in words is "one hundred twenty-one million, seven hundred ninety-six thousand, five hundred thirty-seven".