20522004021144 has 48 divisors (see below), whose sum is σ = 55755760198320. Its totient is φ = 6819088605120.

The previous prime is 20522004021133. The next prime is 20522004021191. The reversal of 20522004021144 is 44112040022502.

It is a happy number.

20522004021144 is a `hidden beast` number, since 2 + 0 + 5 + 2 + 200 + 402 + 11 + 44 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 449547892 + ... + 449593539.

It is an arithmetic number, because the mean of its divisors is an integer number (1161578337465).

Almost surely, 2^{20522004021144} is an apocalyptic number.

20522004021144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20522004021144 is an abundant number, since it is smaller than the sum of its proper divisors (35233756177176).

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

20522004021144 is a wasteful number, since it uses less digits than its factorization.

20522004021144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899141760 (or 899141753 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 20522004021144 its reverse (44112040022502), we get a palindrome (64634044043646).

The spelling of 20522004021144 in words is "twenty trillion, five hundred twenty-two billion, four million, twenty-one thousand, one hundred forty-four".