201021220121222 has 16 divisors (see below), whose sum is σ = 304460852261280. Its totient is φ = 99534279166272.

The previous prime is 201021220121207. The next prime is 201021220121257. The reversal of 201021220121222 is 222121022120102.

It is a junction number, because it is equal to n+sod(n) for n = 201021220121194 and 201021220121203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40504208 + ... + 45195500.

It is an arithmetic number, because the mean of its divisors is an integer number (19028803266330).

Almost surely, 2^{201021220121222} is an apocalyptic number.

201021220121222 is a deficient number, since it is larger than the sum of its proper divisors (103439632140058).

201021220121222 is a wasteful number, since it uses less digits than its factorization.

201021220121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4899407.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 201021220121222 its reverse (222121022120102), we get a palindrome (423142242241324).

The spelling of 201021220121222 in words is "two hundred one trillion, twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, two hundred twenty-two".