21042332024402 has 16 divisors (see below), whose sum is σ = 34003915185240. Its totient is φ = 9708286760832.

The previous prime is 21042332024353. The next prime is 21042332024407. The reversal of 21042332024402 is 20442023324012.

It can be written as a sum of positive squares in 4 ways, for example, as 18582487969081 + 2459844055321 = 4310741^2 + 1568389^2 .

It is not an unprimeable number, because it can be changed into a prime (21042332024407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148210553 + ... + 148352460.

Almost surely, 2^{21042332024402} is an apocalyptic number.

21042332024402 is a deficient number, since it is larger than the sum of its proper divisors (12961583160838).

21042332024402 is a wasteful number, since it uses less digits than its factorization.

21042332024402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296565757.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 21042332024402 its reverse (20442023324012), we get a palindrome (41484355348414).

The spelling of 21042332024402 in words is "twenty-one trillion, forty-two billion, three hundred thirty-two million, twenty-four thousand, four hundred two".