10145216244421 has 4 divisors (see below), whose sum is σ = 10419411278092. Its totient is φ = 9871021210752.

The previous prime is 10145216244407. The next prime is 10145216244439. The reversal of 10145216244421 is 12444261254101.

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 4299029028100 + 5846187216321 = 2073410^2 + 2417889^2 .

It is a cyclic number.

It is not a de Polignac number, because 10145216244421 - 2¹¹ = 10145216242373 is a prime.

It is a super-2 number, since 2×10145216244421² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 274195033633 = 10145216244421 / (1 + 0 + 1 + 4 + 5 + 2 + 1 + 6 + 2 + 4 + 4 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10145216224421) 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, 137097516780 + ... + 137097516853.

It is an arithmetic number, because the mean of its divisors is an integer number (2604852819523).

Almost surely, 2^{10145216244421} is an apocalyptic number.

It is an amenable number.

10145216244421 is a deficient number, since it is larger than the sum of its proper divisors (274195033671).

10145216244421 is an equidigital number, since it uses as much as digits as its factorization.

10145216244421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274195033670.

The product of its (nonzero) digits is 61440, while the sum is 37.

Adding to 10145216244421 its reverse (12444261254101), we get a palindrome (22589477498522).

The spelling of 10145216244421 in words is "ten trillion, one hundred forty-five billion, two hundred sixteen million, two hundred forty-four thousand, four hundred twenty-one".