105344251421 has 16 divisors (see below), whose sum is σ = 108191749248. Its totient is φ = 102542731200.

The previous prime is 105344251387. The next prime is 105344251517. The reversal of 105344251421 is 124152443501.

It is a cyclic number.

It is not a de Polignac number, because 105344251421 - 2²⁶ = 105277142557 is a prime.

It is a super-2 number, since 2×105344251421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105344281421) 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, 1803551 + ... + 1861043.

It is an arithmetic number, because the mean of its divisors is an integer number (6761984328).

Almost surely, 2^105344251421 is an apocalyptic number.

It is an amenable number.

105344251421 is a deficient number, since it is larger than the sum of its proper divisors (2847497827).

105344251421 is a wasteful number, since it uses less digits than its factorization.

105344251421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57892.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 105344251421 its reverse (124152443501), we get a palindrome (229496694922).

The spelling of 105344251421 in words is "one hundred five billion, three hundred forty-four million, two hundred fifty-one thousand, four hundred twenty-one".