126111193331 has 4 divisors (see below), whose sum is σ = 130459855200. Its totient is φ = 121762531464.

The previous prime is 126111193321. The next prime is 126111193337. The reversal of 126111193331 is 133391111621.

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

It is a cyclic number.

It is not a de Polignac number, because 126111193331 - 2¹⁰ = 126111192307 is a prime.

It is a super-2 number, since 2×126111193331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126111193337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2174330891 + ... + 2174330948.

It is an arithmetic number, because the mean of its divisors is an integer number (32614963800).

Almost surely, 2^126111193331 is an apocalyptic number.

126111193331 is a deficient number, since it is larger than the sum of its proper divisors (4348661869).

126111193331 is an equidigital number, since it uses as much as digits as its factorization.

126111193331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4348661868.

The product of its digits is 2916, while the sum is 32.

The spelling of 126111193331 in words is "one hundred twenty-six billion, one hundred eleven million, one hundred ninety-three thousand, three hundred thirty-one".