10120400401 has 4 divisors (see below), whose sum is σ = 10121202100. Its totient is φ = 10119598704.

The previous prime is 10120400371. The next prime is 10120400417. The reversal of 10120400401 is 10400402101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10400402101 = 1019 ⋅10206479.

It can be written as a sum of positive squares in 2 ways, for example, as 7967347600 + 2153052801 = 89260^2 + 46401^2 .

It is a cyclic number.

It is not a de Polignac number, because 10120400401 - 2³³ = 1530465809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10120400471) 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, 381606 + ... + 407263.

It is an arithmetic number, because the mean of its divisors is an integer number (2530300525).

Almost surely, 2^10120400401 is an apocalyptic number.

It is an amenable number.

10120400401 is a deficient number, since it is larger than the sum of its proper divisors (801699).

10120400401 is an equidigital number, since it uses as much as digits as its factorization.

10120400401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801698.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10120400401 its reverse (10400402101), we get a palindrome (20520802502).

The spelling of 10120400401 in words is "ten billion, one hundred twenty million, four hundred thousand, four hundred one".