21233033433404 has 24 divisors (see below), whose sum is σ = 40018154753808. Its totient is φ = 9799358739840.

The previous prime is 21233033433383. The next prime is 21233033433421. The reversal of 21233033433404 is 40433433033212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9451817 + ... + 11480544.

It is an arithmetic number, because the mean of its divisors is an integer number (1667423114742).

Almost surely, 2^{21233033433404} is an apocalyptic number.

It is an amenable number.

21233033433404 is a deficient number, since it is larger than the sum of its proper divisors (18785121320404).

21233033433404 is a wasteful number, since it uses less digits than its factorization.

21233033433404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20951885 (or 20951883 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 35.

Adding to 21233033433404 its reverse (40433433033212), we get a palindrome (61666466466616).

The spelling of 21233033433404 in words is "twenty-one trillion, two hundred thirty-three billion, thirty-three million, four hundred thirty-three thousand, four hundred four".