1534222121 has 2 divisors, whose sum is σ = 1534222122. Its totient is φ = 1534222120.

The previous prime is 1534222099. The next prime is 1534222159. The reversal of 1534222121 is 1212224351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1533818896 + 403225 = 39164^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 1534222121 - 2¹⁰ = 1534221097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1534222321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767111060 + 767111061.

It is an arithmetic number, because the mean of its divisors is an integer number (767111061).

Almost surely, 2^1534222121 is an apocalyptic number.

It is an amenable number.

1534222121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1534222121 is an equidigital number, since it uses as much as digits as its factorization.

1534222121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 23.

The square root of 1534222121 is about 39169.1475653990. The cubic root of 1534222121 is about 1153.3543202789.

Adding to 1534222121 its reverse (1212224351), we get a palindrome (2746446472).

The spelling of 1534222121 in words is "one billion, five hundred thirty-four million, two hundred twenty-two thousand, one hundred twenty-one".