12252021109 has 2 divisors, whose sum is σ = 12252021110. Its totient is φ = 12252021108.

The previous prime is 12252021101. The next prime is 12252021157. The reversal of 12252021109 is 90112025221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10867437009 + 1384584100 = 104247^2 + 37210^2 .

It is a cyclic number.

It is not a de Polignac number, because 12252021109 - 2³ = 12252021101 is a prime.

It is a super-2 number, since 2×12252021109² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12252021101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6126010554 + 6126010555.

It is an arithmetic number, because the mean of its divisors is an integer number (6126010555).

Almost surely, 2^12252021109 is an apocalyptic number.

It is an amenable number.

12252021109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12252021109 is an equidigital number, since it uses as much as digits as its factorization.

12252021109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The spelling of 12252021109 in words is "twelve billion, two hundred fifty-two million, twenty-one thousand, one hundred nine".