16212245532541 has 4 divisors (see below), whose sum is σ = 16230731560252. Its totient is φ = 16193759504832.

The previous prime is 16212245532481. The next prime is 16212245532611. The reversal of 16212245532541 is 14523554221261.

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 14465166956100 + 1747078576441 = 3803310^2 + 1321771^2 .

It is a cyclic number.

It is not a de Polignac number, because 16212245532541 - 2¹¹ = 16212245530493 is a prime.

It is a super-2 number, since 2×16212245532541² (a number of 27 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 (16212245592541) 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, 9243012540 + ... + 9243014293.

It is an arithmetic number, because the mean of its divisors is an integer number (4057682890063).

Almost surely, 2^{16212245532541} is an apocalyptic number.

It is an amenable number.

16212245532541 is a deficient number, since it is larger than the sum of its proper divisors (18486027711).

16212245532541 is an equidigital number, since it uses as much as digits as its factorization.

16212245532541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18486027710.

The product of its digits is 576000, while the sum is 43.

The spelling of 16212245532541 in words is "sixteen trillion, two hundred twelve billion, two hundred forty-five million, five hundred thirty-two thousand, five hundred forty-one".