150211421 has 2 divisors, whose sum is σ = 150211422. Its totient is φ = 150211420.

The previous prime is 150211417. The next prime is 150211423. The reversal of 150211421 is 124112051.

150211421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147355321 + 2856100 = 12139^2 + 1690^2 .

It is a cyclic number.

It is not a de Polignac number, because 150211421 - 2² = 150211417 is a prime.

Together with 150211423, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 150211421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150211423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75105710 + 75105711.

It is an arithmetic number, because the mean of its divisors is an integer number (75105711).

Almost surely, 2^150211421 is an apocalyptic number.

It is an amenable number.

150211421 is a deficient number, since it is larger than the sum of its proper divisors (1).

150211421 is an equidigital number, since it uses as much as digits as its factorization.

150211421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 150211421 is about 12256.0769008684. The cubic root of 150211421 is about 531.5787988860.

Adding to 150211421 its reverse (124112051), we get a palindrome (274323472).

The spelling of 150211421 in words is "one hundred fifty million, two hundred eleven thousand, four hundred twenty-one".