20212001002004 has 48 divisors (see below), whose sum is σ = 42804113361408. Its totient is φ = 8152315350528.

The previous prime is 20212001002001. The next prime is 20212001002007. The reversal of 20212001002004 is 40020010021202.

It is an interprime number because it is at equal distance from previous prime (20212001002001) and next prime (20212001002007).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a self number, because there is not a number n which added to its sum of digits gives 20212001002004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212001002001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8125637 + ... + 10317459.

It is an arithmetic number, because the mean of its divisors is an integer number (891752361696).

Almost surely, 2^{20212001002004} is an apocalyptic number.

It is an amenable number.

20212001002004 is an abundant number, since it is smaller than the sum of its proper divisors (22592112359404).

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

20212001002004 is a wasteful number, since it uses less digits than its factorization.

20212001002004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211224 (or 2211222 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20212001002004 its reverse (40020010021202), we get a palindrome (60232011023206).

The spelling of 20212001002004 in words is "twenty trillion, two hundred twelve billion, one million, two thousand, four".