121010137 has 2 divisors, whose sum is σ = 121010138. Its totient is φ = 121010136.

The previous prime is 121010117. The next prime is 121010159. The reversal of 121010137 is 731010121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60543961 + 60466176 = 7781^2 + 7776^2 .

It is an emirp because it is prime and its reverse (731010121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121010137 - 2¹¹ = 121008089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121010137.

It is not a weakly prime, because it can be changed into another prime (121010117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505068 + 60505069.

It is an arithmetic number, because the mean of its divisors is an integer number (60505069).

Almost surely, 2^121010137 is an apocalyptic number.

It is an amenable number.

121010137 is a deficient number, since it is larger than the sum of its proper divisors (1).

121010137 is an equidigital number, since it uses as much as digits as its factorization.

121010137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 121010137 is about 11000.4607630772. The cubic root of 121010137 is about 494.6225561949.

Subtracting from 121010137 its sum of digits (16), we obtain a palindrome (121010121).

Adding to 121010137 its reverse (731010121), we get a palindrome (852020258).

The spelling of 121010137 in words is "one hundred twenty-one million, ten thousand, one hundred thirty-seven".