126170221859 has 4 divisors (see below), whose sum is σ = 137640242040. Its totient is φ = 114700201680.

The previous prime is 126170221847. The next prime is 126170221871. The reversal of 126170221859 is 958122071621.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (126170221847) and next prime (126170221871).

It is a cyclic number.

It is not a de Polignac number, because 126170221859 - 2¹⁶ = 126170156323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126170221159) 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 in 3 ways as a sum of consecutive naturals, for example, 5735010074 + ... + 5735010095.

It is an arithmetic number, because the mean of its divisors is an integer number (34410060510).

Almost surely, 2^126170221859 is an apocalyptic number.

126170221859 is a deficient number, since it is larger than the sum of its proper divisors (11470020181).

126170221859 is a wasteful number, since it uses less digits than its factorization.

126170221859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11470020180.

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 126170221859 in words is "one hundred twenty-six billion, one hundred seventy million, two hundred twenty-one thousand, eight hundred fifty-nine".