126662122521 has 96 divisors (see below), whose sum is σ = 209220278400. Its totient is φ = 75669264000.

The previous prime is 126662122487. The next prime is 126662122577. The reversal of 126662122521 is 125221266621.

It is not a de Polignac number, because 126662122521 - 2¹³ = 126662114329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126662122021) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 88760410 + ... + 88761836.

It is an arithmetic number, because the mean of its divisors is an integer number (2179377900).

Almost surely, 2^126662122521 is an apocalyptic number.

126662122521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126662122521 is a deficient number, since it is larger than the sum of its proper divisors (82558155879).

126662122521 is a wasteful number, since it uses less digits than its factorization.

126662122521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828 (or 1811 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The spelling of 126662122521 in words is "one hundred twenty-six billion, six hundred sixty-two million, one hundred twenty-two thousand, five hundred twenty-one".