2021201222122 has 8 divisors (see below), whose sum is σ = 3031824730500. Its totient is φ = 1010592978624.

The previous prime is 2021201222119. The next prime is 2021201222123. The reversal of 2021201222122 is 2212221021202.

It can be written as a sum of positive squares in 2 ways, for example, as 1162556211961 + 858645010161 = 1078219^2 + 926631^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2021201222122.

It is not an unprimeable number, because it can be changed into a prime (2021201222123) 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, 3479247 + ... + 4018402.

Almost surely, 2^{2021201222122} is an apocalyptic number.

2021201222122 is a deficient number, since it is larger than the sum of its proper divisors (1010623508378).

2021201222122 is a wasteful number, since it uses less digits than its factorization.

2021201222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7632440.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2021201222122 its reverse (2212221021202), we get a palindrome (4233422243324).

The spelling of 2021201222122 in words is "two trillion, twenty-one billion, two hundred one million, two hundred twenty-two thousand, one hundred twenty-two".