20020212021 has 32 divisors (see below), whose sum is σ = 27882602496. Its totient is φ = 12763080000.

The previous prime is 20020212001. The next prime is 20020212053. The reversal of 20020212021 is 12021202002.

It is not a de Polignac number, because 20020212021 - 2⁶ = 20020211957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020211988 and 20020212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020212001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5511876 + ... + 5515506.

It is an arithmetic number, because the mean of its divisors is an integer number (871331328).

Almost surely, 2^20020212021 is an apocalyptic number.

It is an amenable number.

20020212021 is a deficient number, since it is larger than the sum of its proper divisors (7862390475).

20020212021 is a wasteful number, since it uses less digits than its factorization.

20020212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20020212021 its reverse (12021202002), we get a palindrome (32041414023).

The spelling of 20020212021 in words is "twenty billion, twenty million, two hundred twelve thousand, twenty-one".