2204538354021 has 16 divisors (see below), whose sum is σ = 2947514543424. Its totient is φ = 1465632315264.

The previous prime is 2204538354001. The next prime is 2204538354023. The reversal of 2204538354021 is 1204538354022.

It is not a de Polignac number, because 2204538354021 - 2¹⁰ = 2204538352997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2204538354023) 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, 1087570 + ... + 2364716.

It is an arithmetic number, because the mean of its divisors is an integer number (184219658964).

Almost surely, 2^{2204538354021} is an apocalyptic number.

It is an amenable number.

2204538354021 is a deficient number, since it is larger than the sum of its proper divisors (742976189403).

2204538354021 is a wasteful number, since it uses less digits than its factorization.

2204538354021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278740.

The product of its (nonzero) digits is 230400, while the sum is 39.

Subtracting from 2204538354021 its reverse (1204538354022), we obtain a palindrome (999999999999).

The spelling of 2204538354021 in words is "two trillion, two hundred four billion, five hundred thirty-eight million, three hundred fifty-four thousand, twenty-one".