10204240522421 has 48 divisors (see below), whose sum is σ = 11548600210224. Its totient is φ = 9004081152000.

The previous prime is 10204240522417. The next prime is 10204240522433. The reversal of 10204240522421 is 12422504240201.

10204240522421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 21051108100 + 10183189414321 = 145090^2 + 3191111^2 .

It is not a de Polignac number, because 10204240522421 - 2² = 10204240522417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10204240522471) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1455042911 + ... + 1455049923.

It is an arithmetic number, because the mean of its divisors is an integer number (240595837713).

Almost surely, 2^{10204240522421} is an apocalyptic number.

10204240522421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10204240522421 is a deficient number, since it is larger than the sum of its proper divisors (1344359687803).

10204240522421 is a wasteful number, since it uses less digits than its factorization.

10204240522421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8534 (or 8523 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

Adding to 10204240522421 its reverse (12422504240201), we get a palindrome (22626744762622).

The spelling of 10204240522421 in words is "ten trillion, two hundred four billion, two hundred forty million, five hundred twenty-two thousand, four hundred twenty-one".