20020200212221 has 96 divisors (see below), whose sum is σ = 24443183407104. Its totient is φ = 16312083110400.

The previous prime is 20020200212167. The next prime is 20020200212227. The reversal of 20020200212221 is 12221200202002.

It is not a de Polignac number, because 20020200212221 - 2¹³ = 20020200204029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020200212195 and 20020200212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020200212227) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1093333656 + ... + 1093351966.

It is an arithmetic number, because the mean of its divisors is an integer number (254616493824).

Almost surely, 2^{20020200212221} is an apocalyptic number.

It is an amenable number.

20020200212221 is a deficient number, since it is larger than the sum of its proper divisors (4422983194883).

20020200212221 is a wasteful number, since it uses less digits than its factorization.

20020200212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18703 (or 18692 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20020200212221 its reverse (12221200202002), we get a palindrome (32241400414223).

It can be divided in two parts, 200202002 and 12221, that multiplied together give a palindrome (2446668666442).

The spelling of 20020200212221 in words is "twenty trillion, twenty billion, two hundred million, two hundred twelve thousand, two hundred twenty-one".