201220020211021 has 8 divisors (see below), whose sum is σ = 229967242231424. Its totient is φ = 172473174402480.

The previous prime is 201220020211009. The next prime is 201220020211039. The reversal of 201220020211021 is 120112020022102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201220020211021 - 2⁹ = 201220020210509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201220020210986 and 201220020211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201220020211921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92905905 + ... + 95047078.

It is an arithmetic number, because the mean of its divisors is an integer number (28745905278928).

Almost surely, 2^{201220020211021} is an apocalyptic number.

It is an amenable number.

201220020211021 is a deficient number, since it is larger than the sum of its proper divisors (28747222020403).

201220020211021 is a wasteful number, since it uses less digits than its factorization.

201220020211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188105931.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201220020211021 its reverse (120112020022102), we get a palindrome (321332040233123).

The spelling of 201220020211021 in words is "two hundred one trillion, two hundred twenty billion, twenty million, two hundred eleven thousand, twenty-one".