250123201221 has 8 divisors (see below), whose sum is σ = 335543599840. Its totient is φ = 165725801712.

The previous prime is 250123201201. The next prime is 250123201297. The reversal of 250123201221 is 122102321052.

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

It is not a de Polignac number, because 250123201221 - 2³¹ = 247975717573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250123201201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255749206 + ... + 255750183.

It is an arithmetic number, because the mean of its divisors is an integer number (41942949980).

Almost surely, 2^250123201221 is an apocalyptic number.

It is an amenable number.

250123201221 is a deficient number, since it is larger than the sum of its proper divisors (85420398619).

250123201221 is a wasteful number, since it uses less digits than its factorization.

250123201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511499555.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 250123201221 its reverse (122102321052), we get a palindrome (372225522273).

The spelling of 250123201221 in words is "two hundred fifty billion, one hundred twenty-three million, two hundred one thousand, two hundred twenty-one".