126136012201 has 4 divisors (see below), whose sum is σ = 126232521552. Its totient is φ = 126039502852.

The previous prime is 126136012199. The next prime is 126136012213. The reversal of 126136012201 is 102210631621.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 126136012201 - 2¹ = 126136012199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126136012231) 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, 48252715 + ... + 48255328.

It is an arithmetic number, because the mean of its divisors is an integer number (31558130388).

Almost surely, 2^126136012201 is an apocalyptic number.

It is an amenable number.

126136012201 is a deficient number, since it is larger than the sum of its proper divisors (96509351).

126136012201 is an equidigital number, since it uses as much as digits as its factorization.

126136012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96509350.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 126136012201 its reverse (102210631621), we get a palindrome (228346643822).

The spelling of 126136012201 in words is "one hundred twenty-six billion, one hundred thirty-six million, twelve thousand, two hundred one".