250121231 has 2 divisors, whose sum is σ = 250121232. Its totient is φ = 250121230.

The previous prime is 250121227. The next prime is 250121243. The reversal of 250121231 is 132121052.

It is a happy number.

250121231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 250121231 - 2² = 250121227 is a prime.

It is a super-2 number, since 2×250121231² = 125121260393910722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250121281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125060615 + 125060616.

It is an arithmetic number, because the mean of its divisors is an integer number (125060616).

Almost surely, 2^250121231 is an apocalyptic number.

250121231 is a deficient number, since it is larger than the sum of its proper divisors (1).

250121231 is an equidigital number, since it uses as much as digits as its factorization.

250121231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 250121231 is about 15815.2214970262. The cubic root of 250121231 is about 630.0623361515.

Adding to 250121231 its reverse (132121052), we get a palindrome (382242283).

It can be divided in two parts, 2501 and 21231, that added together give a palindrome (23732).

The spelling of 250121231 in words is "two hundred fifty million, one hundred twenty-one thousand, two hundred thirty-one".