2204356534021 has 32 divisors (see below), whose sum is σ = 2474061649920. Its totient is φ = 1954486886400.

The previous prime is 2204356534013. The next prime is 2204356534043. The reversal of 2204356534021 is 1204356534022.

It is a cyclic number.

It is not a de Polignac number, because 2204356534021 - 2³ = 2204356534013 is a prime.

It is a super-2 number, since 2×2204356534021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2204356534621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2764800 + ... + 3471718.

It is an arithmetic number, because the mean of its divisors is an integer number (77314426560).

Almost surely, 2^{2204356534021} is an apocalyptic number.

It is an amenable number.

2204356534021 is a deficient number, since it is larger than the sum of its proper divisors (269705115899).

2204356534021 is a wasteful number, since it uses less digits than its factorization.

2204356534021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707125.

The product of its (nonzero) digits is 172800, while the sum is 37.

Subtracting from 2204356534021 its reverse (1204356534022), we obtain a palindrome (999999999999).

The spelling of 2204356534021 in words is "two trillion, two hundred four billion, three hundred fifty-six million, five hundred thirty-four thousand, twenty-one".