121600137 has 16 divisors (see below), whose sum is σ = 166840128. Its totient is φ = 78731520.

The previous prime is 121600097. The next prime is 121600147. The reversal of 121600137 is 731006121.

It is not a de Polignac number, because 121600137 - 2¹⁴ = 121583753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121600147) 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, 26538 + ... + 30780.

It is an arithmetic number, because the mean of its divisors is an integer number (10427508).

Almost surely, 2^121600137 is an apocalyptic number.

It is an amenable number.

121600137 is a deficient number, since it is larger than the sum of its proper divisors (45239991).

121600137 is a wasteful number, since it uses less digits than its factorization.

121600137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4520.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 121600137 is about 11027.2452135608. The cubic root of 121600137 is about 495.4251179080.

Adding to 121600137 its reverse (731006121), we get a palindrome (852606258).

The spelling of 121600137 in words is "one hundred twenty-one million, six hundred thousand, one hundred thirty-seven".