250221225221121 has 32 divisors (see below), whose sum is σ = 415986871477248. Its totient is φ = 129974206789440.

The previous prime is 250221225221113. The next prime is 250221225221171. The reversal of 250221225221121 is 121122522122052.

It is a happy number.

It is not a de Polignac number, because 250221225221121 - 2³ = 250221225221113 is a prime.

It is a super-2 number, since 2×250221225221121² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (250221225221171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42413650 + ... + 47951643.

It is an arithmetic number, because the mean of its divisors is an integer number (12999589733664).

Almost surely, 2^{250221225221121} is an apocalyptic number.

250221225221121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

250221225221121 is a deficient number, since it is larger than the sum of its proper divisors (165765646256127).

250221225221121 is a wasteful number, since it uses less digits than its factorization.

250221225221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90377301.

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 250221225221121 its reverse (121122522122052), we get a palindrome (371343747343173).

The spelling of 250221225221121 in words is "two hundred fifty trillion, two hundred twenty-one billion, two hundred twenty-five million, two hundred twenty-one thousand, one hundred twenty-one".