20212002 has 24 divisors (see below), whose sum is σ = 44029440. Its totient is φ = 6700920.

The previous prime is 20212001. The next prime is 20212013. The reversal of 20212002 is 20021202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212001) 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, 499 + ... + 6377.

It is an arithmetic number, because the mean of its divisors is an integer number (1834560).

Almost surely, 2^20212002 is an apocalyptic number.

20212002 is an abundant number, since it is smaller than the sum of its proper divisors (23817438).

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

20212002 is a wasteful number, since it uses less digits than its factorization.

20212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6078 (or 6075 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 20212002 is about 4495.7760175525. The cubic root of 20212002 is about 272.3974958854.

Adding to 20212002 its reverse (20021202), we get a palindrome (40233204).

It can be divided in two parts, 2021200 and 2, that added together give a palindrome (2021202).

The spelling of 20212002 in words is "twenty million, two hundred twelve thousand, two".