210440140422401 has 16 divisors (see below), whose sum is σ = 223214961011328. Its totient is φ = 197709336518400.

The previous prime is 210440140422383. The next prime is 210440140422419. The reversal of 210440140422401 is 104224041044012.

It is an interprime number because it is at equal distance from previous prime (210440140422383) and next prime (210440140422419).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210440140422401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210440145422401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406105211 + ... + 406623071.

It is an arithmetic number, because the mean of its divisors is an integer number (13950935063208).

Almost surely, 2^{210440140422401} is an apocalyptic number.

It is an amenable number.

210440140422401 is a deficient number, since it is larger than the sum of its proper divisors (12774820588927).

210440140422401 is a wasteful number, since it uses less digits than its factorization.

210440140422401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560312.

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 210440140422401 its reverse (104224041044012), we get a palindrome (314664181466413).

The spelling of 210440140422401 in words is "two hundred ten trillion, four hundred forty billion, one hundred forty million, four hundred twenty-two thousand, four hundred one".