151000505221 has 2 divisors, whose sum is σ = 151000505222. Its totient is φ = 151000505220.

The previous prime is 151000505213. The next prime is 151000505231. The reversal of 151000505221 is 122505000151.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105306740100 + 45693765121 = 324510^2 + 213761^2 .

It is a cyclic number.

It is not a de Polignac number, because 151000505221 - 2³ = 151000505213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 151000505192 and 151000505201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151000505231) 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 as a sum of consecutive naturals, namely, 75500252610 + 75500252611.

It is an arithmetic number, because the mean of its divisors is an integer number (75500252611).

Almost surely, 2^151000505221 is an apocalyptic number.

It is an amenable number.

151000505221 is a deficient number, since it is larger than the sum of its proper divisors (1).

151000505221 is an equidigital number, since it uses as much as digits as its factorization.

151000505221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 500, while the sum is 22.

Adding to 151000505221 its reverse (122505000151), we get a palindrome (273505505372).

The spelling of 151000505221 in words is "one hundred fifty-one billion, five hundred five thousand, two hundred twenty-one".