20021021202024 has 48 divisors (see below), whose sum is σ = 54224180761920. Its totient is φ = 6673602143520.

The previous prime is 20021021201977. The next prime is 20021021202043. The reversal of 20021021202024 is 42020212012002.

20021021202024 is a `hidden beast` number, since 200 + 210 + 212 + 0 + 20 + 24 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20021021201988 and 20021021202006.

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, 5492529 + ... + 8379135.

It is an arithmetic number, because the mean of its divisors is an integer number (1129670432540).

Almost surely, 2^{20021021202024} is an apocalyptic number.

20021021202024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20021021202024 is an abundant number, since it is smaller than the sum of its proper divisors (34203159559896).

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

20021021202024 is a wasteful number, since it uses less digits than its factorization.

20021021202024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982950 (or 2982943 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20021021202024 its reverse (42020212012002), we get a palindrome (62041233214026).

The spelling of 20021021202024 in words is "twenty trillion, twenty-one billion, twenty-one million, two hundred two thousand, twenty-four".