201120220020221 has 8 divisors (see below), whose sum is σ = 205118028363960. Its totient is φ = 197129933425152.

The previous prime is 201120220020191. The next prime is 201120220020257. The reversal of 201120220020221 is 122020022021102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 77778094617721 + 123342125402500 = 8819189^2 + 11105950^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201120220020221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201120220020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201120220020721) 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, 1880383160 + ... + 1880490113.

It is an arithmetic number, because the mean of its divisors is an integer number (25639753545495).

Almost surely, 2^{201120220020221} is an apocalyptic number.

It is an amenable number.

201120220020221 is a deficient number, since it is larger than the sum of its proper divisors (3997808343739).

201120220020221 is a wasteful number, since it uses less digits than its factorization.

201120220020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3760874335.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201120220020221 its reverse (122020022021102), we get a palindrome (323140242041323).

The spelling of 201120220020221 in words is "two hundred one trillion, one hundred twenty billion, two hundred twenty million, twenty thousand, two hundred twenty-one".