137221026 has 8 divisors (see below), whose sum is σ = 274442064. Its totient is φ = 45740340.

The previous prime is 137221009. The next prime is 137221027. The reversal of 137221026 is 620122731.

137221026 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

137221026 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 137220987 and 137221005.

It is not an unprimeable number, because it can be changed into a prime (137221027) 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 in 3 ways as a sum of consecutive naturals, for example, 11435080 + ... + 11435091.

It is an arithmetic number, because the mean of its divisors is an integer number (34305258).

Almost surely, 2^137221026 is an apocalyptic number.

137221026 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137221026 is a wasteful number, since it uses less digits than its factorization.

137221026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22870176.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 137221026 is about 11714.1378684050. The cubic root of 137221026 is about 515.7907555544.

Adding to 137221026 its reverse (620122731), we get a palindrome (757343757).

The spelling of 137221026 in words is "one hundred thirty-seven million, two hundred twenty-one thousand, twenty-six".