201120223021 has 4 divisors (see below), whose sum is σ = 201998477500. Its totient is φ = 200241968544.

The previous prime is 201120223019. The next prime is 201120223063. The reversal of 201120223021 is 120322021102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 143140398921 + 57979824100 = 378339^2 + 240790^2 .

It is a cyclic number.

It is not a de Polignac number, because 201120223021 - 2¹ = 201120223019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201120222986 and 201120223004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201120223721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439126896 + ... + 439127353.

It is an arithmetic number, because the mean of its divisors is an integer number (50499619375).

Almost surely, 2^201120223021 is an apocalyptic number.

It is an amenable number.

201120223021 is a deficient number, since it is larger than the sum of its proper divisors (878254479).

201120223021 is an equidigital number, since it uses as much as digits as its factorization.

201120223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878254478.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 201120223021 its reverse (120322021102), we get a palindrome (321442244123).

The spelling of 201120223021 in words is "two hundred one billion, one hundred twenty million, two hundred twenty-three thousand, twenty-one".