2042433400221 has 12 divisors (see below), whose sum is σ = 2951277113148. Its totient is φ = 1361116635264.

The previous prime is 2042433400211. The next prime is 2042433400223. The reversal of 2042433400221 is 1220043342402.

2042433400221 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 4 + 33 + 400 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1166646252996 + 875787147225 = 1080114^2 + 935835^2 .

It is not a de Polignac number, because 2042433400221 - 2¹⁸ = 2042433138077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042433400223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42110380 + ... + 42158853.

It is an arithmetic number, because the mean of its divisors is an integer number (245939759429).

Almost surely, 2^{2042433400221} is an apocalyptic number.

It is an amenable number.

2042433400221 is a deficient number, since it is larger than the sum of its proper divisors (908843712927).

2042433400221 is a wasteful number, since it uses less digits than its factorization.

2042433400221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84271932 (or 84271929 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 2042433400221 its reverse (1220043342402), we get a palindrome (3262476742623).

The spelling of 2042433400221 in words is "two trillion, forty-two billion, four hundred thirty-three million, four hundred thousand, two hundred twenty-one".