20021144040300 has 144 divisors (see below), whose sum is σ = 62587039784192. Its totient is φ = 4912228281600.

The previous prime is 20021144040299. The next prime is 20021144040301. The reversal of 20021144040300 is 304044112002.

It is an interprime number because it is at equal distance from previous prime (20021144040299) and next prime (20021144040301).

It is not an unprimeable number, because it can be changed into a prime (20021144040301) 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, 7163656 + ... + 9558255.

Almost surely, 2^{20021144040300} is an apocalyptic number.

20021144040300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021144040300 is an abundant number, since it is smaller than the sum of its proper divisors (42565895743892).

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

20021144040300 is a wasteful number, since it uses less digits than its factorization.

20021144040300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16722248 (or 16722241 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20021144040300 its reverse (304044112002), we get a palindrome (20325188152302).

The spelling of 20021144040300 in words is "twenty trillion, twenty-one billion, one hundred forty-four million, forty thousand, three hundred".