20020210120221 has 16 divisors (see below), whose sum is σ = 26806804575936. Its totient is φ = 13290322507776.

The previous prime is 20020210120199. The next prime is 20020210120241. The reversal of 20020210120221 is 12202101202002.

It is not a de Polignac number, because 20020210120221 - 2³⁴ = 20003030251037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20020210120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020210120241) 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, 13192740 + ... + 14631773.

It is an arithmetic number, because the mean of its divisors is an integer number (1675425285996).

Almost surely, 2^{20020210120221} is an apocalyptic number.

It is an amenable number.

20020210120221 is a deficient number, since it is larger than the sum of its proper divisors (6786594455715).

20020210120221 is a wasteful number, since it uses less digits than its factorization.

20020210120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27825532.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20020210120221 its reverse (12202101202002), we get a palindrome (32222311322223).

The spelling of 20020210120221 in words is "twenty trillion, twenty billion, two hundred ten million, one hundred twenty thousand, two hundred twenty-one".