20212001424 has 60 divisors (see below), whose sum is σ = 56852746236. Its totient is φ = 6703124736.

The previous prime is 20212001419. The next prime is 20212001429. The reversal of 20212001424 is 42410021202.

20212001424 is a `hidden beast` number, since 20 + 21 + 200 + 1 + 424 = 666.

It is an interprime number because it is at equal distance from previous prime (20212001419) and next prime (20212001429).

It can be written as a sum of positive squares in 2 ways, for example, as 17045913600 + 3166087824 = 130560^2 + 56268^2 .

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 = 20212001397 and 20212001406.

It is not an unprimeable number, because it can be changed into a prime (20212001429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 327879 + ... + 384614.

Almost surely, 2^20212001424 is an apocalyptic number.

20212001424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20212001424 is an abundant number, since it is smaller than the sum of its proper divisors (36640744812).

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

20212001424 is a wasteful number, since it uses less digits than its factorization.

20212001424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712704 (or 712695 counting only the distinct ones).

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

Adding to 20212001424 its reverse (42410021202), we get a palindrome (62622022626).

The spelling of 20212001424 in words is "twenty billion, two hundred twelve million, one thousand, four hundred twenty-four".