201020021200221 has 8 divisors (see below), whose sum is σ = 268027322049984. Its totient is φ = 134013033908640.

The previous prime is 201020021200169. The next prime is 201020021200277. The reversal of 201020021200221 is 122002120020102.

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

It is not a de Polignac number, because 201020021200221 - 2¹⁰ = 201020021199197 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201020021200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020021200321) 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, 76889560 + ... + 79460961.

It is an arithmetic number, because the mean of its divisors is an integer number (33503415256248).

Almost surely, 2^{201020021200221} is an apocalyptic number.

It is an amenable number.

201020021200221 is a deficient number, since it is larger than the sum of its proper divisors (67007300849763).

201020021200221 is a wasteful number, since it uses less digits than its factorization.

201020021200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156779091.

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

Adding to 201020021200221 its reverse (122002120020102), we get a palindrome (323022141220323).

The spelling of 201020021200221 in words is "two hundred one trillion, twenty billion, twenty-one million, two hundred thousand, two hundred twenty-one".