202012120120221 has 16 divisors (see below), whose sum is σ = 306576659262720. Its totient is φ = 131389996825440.

The previous prime is 202012120120219. The next prime is 202012120120267. The reversal of 202012120120221 is 122021021210202.

It is a happy number.

202012120120221 is a `hidden beast` number, since 2 + 0 + 201 + 2 + 120 + 120 + 221 = 666.

It is not a de Polignac number, because 202012120120221 - 2¹ = 202012120120219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202012120120194 and 202012120120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202012120100221) 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, 91243052245 + ... + 91243054458.

It is an arithmetic number, because the mean of its divisors is an integer number (19161041203920).

Almost surely, 2^{202012120120221} is an apocalyptic number.

It is an amenable number.

202012120120221 is a deficient number, since it is larger than the sum of its proper divisors (104564539142499).

202012120120221 is a wasteful number, since it uses less digits than its factorization.

202012120120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182486106753 (or 182486106747 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202012120120221 its reverse (122021021210202), we get a palindrome (324033141330423).

The spelling of 202012120120221 in words is "two hundred two trillion, twelve billion, one hundred twenty million, one hundred twenty thousand, two hundred twenty-one".