42203112445521 has 16 divisors (see below), whose sum is σ = 62541567646720. Its totient is φ = 28127111153040.

The previous prime is 42203112445511. The next prime is 42203112445531. The reversal of 42203112445521 is 12554421130224.

42203112445521 is a `hidden beast` number, since 4 + 2 + 2 + 0 + 3 + 1 + 124 + 4 + 5 + 521 = 666.

It is an interprime number because it is at equal distance from previous prime (42203112445511) and next prime (42203112445531).

It is not a de Polignac number, because 42203112445521 - 2¹³ = 42203112437329 is a prime.

It is a super-2 number, since 2×42203112445521² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42203112445511) 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, 230382970 + ... + 230566083.

It is an arithmetic number, because the mean of its divisors is an integer number (3908847977920).

Almost surely, 2^{42203112445521} is an apocalyptic number.

It is an amenable number.

42203112445521 is a deficient number, since it is larger than the sum of its proper divisors (20338455201199).

42203112445521 is a wasteful number, since it uses less digits than its factorization.

42203112445521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460952453 (or 460952447 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 42203112445521 its reverse (12554421130224), we get a palindrome (54757533575745).

The spelling of 42203112445521 in words is "forty-two trillion, two hundred three billion, one hundred twelve million, four hundred forty-five thousand, five hundred twenty-one".