126228001249 has 4 divisors (see below), whose sum is σ = 144260572864. Its totient is φ = 108195429636.

The previous prime is 126228001243. The next prime is 126228001267. The reversal of 126228001249 is 942100822621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 942100822621 = 7 ⋅134585831803.

It is not a de Polignac number, because 126228001249 - 2²³ = 126219612641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126228001243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9016285797 + ... + 9016285810.

It is an arithmetic number, because the mean of its divisors is an integer number (36065143216).

Almost surely, 2^126228001249 is an apocalyptic number.

It is an amenable number.

126228001249 is a deficient number, since it is larger than the sum of its proper divisors (18032571615).

126228001249 is an equidigital number, since it uses as much as digits as its factorization.

126228001249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18032571614.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 126228001249 in words is "one hundred twenty-six billion, two hundred twenty-eight million, one thousand, two hundred forty-nine".