137166121 has 4 divisors (see below), whose sum is σ = 137199744. Its totient is φ = 137132500.

The previous prime is 137166119. The next prime is 137166131. The reversal of 137166121 is 121661731.

137166121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 137166121 - 2¹ = 137166119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137166121.

It is not an unprimeable number, because it can be changed into a prime (137166101) 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, 9685 + ... + 19186.

It is an arithmetic number, because the mean of its divisors is an integer number (34299936).

Almost surely, 2^137166121 is an apocalyptic number.

It is an amenable number.

137166121 is a deficient number, since it is larger than the sum of its proper divisors (33623).

137166121 is an equidigital number, since it uses as much as digits as its factorization.

137166121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33622.

The product of its digits is 1512, while the sum is 28.

The square root of 137166121 is about 11711.7940982584. The cubic root of 137166121 is about 515.7219534907.

The spelling of 137166121 in words is "one hundred thirty-seven million, one hundred sixty-six thousand, one hundred twenty-one".