10140005511221 has 4 divisors (see below), whose sum is σ = 10184285011500. Its totient is φ = 10095726010944.

The previous prime is 10140005511203. The next prime is 10140005511257. The reversal of 10140005511221 is 12211550004101.

It is a happy number.

10140005511221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6298287910321 + 3841717600900 = 2509639^2 + 1960030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10140005511221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10140005511121) 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, 22139749796 + ... + 22139750253.

It is an arithmetic number, because the mean of its divisors is an integer number (2546071252875).

Almost surely, 2^{10140005511221} is an apocalyptic number.

It is an amenable number.

10140005511221 is a deficient number, since it is larger than the sum of its proper divisors (44279500279).

10140005511221 is an equidigital number, since it uses as much as digits as its factorization.

10140005511221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44279500278.

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 10140005511221 its reverse (12211550004101), we get a palindrome (22351555515322).

The spelling of 10140005511221 in words is "ten trillion, one hundred forty billion, five million, five hundred eleven thousand, two hundred twenty-one".