150022121 has 4 divisors (see below), whose sum is σ = 150048852. Its totient is φ = 149995392.

The previous prime is 150022111. The next prime is 150022139. The reversal of 150022121 is 121220051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103632400 + 46389721 = 10180^2 + 6811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150022121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 150022096 and 150022105.

It is not an unprimeable number, because it can be changed into a prime (150022111) 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, 1340 + ... + 17373.

It is an arithmetic number, because the mean of its divisors is an integer number (37512213).

Almost surely, 2^150022121 is an apocalyptic number.

It is an amenable number.

150022121 is a deficient number, since it is larger than the sum of its proper divisors (26731).

150022121 is an equidigital number, since it uses as much as digits as its factorization.

150022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26730.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 150022121 is about 12248.3517666664. The cubic root of 150022121 is about 531.3554022744.

Adding to 150022121 its reverse (121220051), we get a palindrome (271242172).

The spelling of 150022121 in words is "one hundred fifty million, twenty-two thousand, one hundred twenty-one".