21244011244204 has 24 divisors (see below), whose sum is σ = 42493158697248. Its totient is φ = 9103475631360.

The previous prime is 21244011244189. The next prime is 21244011244219. The reversal of 21244011244204 is 40244211044212.

It is an interprime number because it is at equal distance from previous prime (21244011244189) and next prime (21244011244219).

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, 45623227 + ... + 46086514.

It is an arithmetic number, because the mean of its divisors is an integer number (1770548279052).

Almost surely, 2^{21244011244204} is an apocalyptic number.

It is an amenable number.

21244011244204 is an abundant number, since it is smaller than the sum of its proper divisors (21249147453044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21244011244204 is a wasteful number, since it uses less digits than its factorization.

21244011244204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91718025 (or 91718023 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 31.

Adding to 21244011244204 its reverse (40244211044212), we get a palindrome (61488222288416).

The spelling of 21244011244204 in words is "twenty-one trillion, two hundred forty-four billion, eleven million, two hundred forty-four thousand, two hundred four".