21533032412141 has 16 divisors (see below), whose sum is σ = 21785609175408. Its totient is φ = 21281579827200.

The previous prime is 21533032412117. The next prime is 21533032412251. The reversal of 21533032412141 is 14121423033512.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1388105756041 + 20144926656100 = 1178179^2 + 4488310^2 .

It is a cyclic number.

It is not a de Polignac number, because 21533032412141 - 2¹⁴ = 21533032395757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21533032412098 and 21533032412107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21533032462141) 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, 136343381 + ... + 136501221.

It is an arithmetic number, because the mean of its divisors is an integer number (1361600573463).

Almost surely, 2^{21533032412141} is an apocalyptic number.

It is an amenable number.

21533032412141 is a deficient number, since it is larger than the sum of its proper divisors (252576763267).

21533032412141 is a wasteful number, since it uses less digits than its factorization.

21533032412141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161392.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 21533032412141 its reverse (14121423033512), we get a palindrome (35654455445653).

The spelling of 21533032412141 in words is "twenty-one trillion, five hundred thirty-three billion, thirty-two million, four hundred twelve thousand, one hundred forty-one".