2021120220122 has 4 divisors (see below), whose sum is σ = 3031680330186. Its totient is φ = 1010560110060.

The previous prime is 2021120220101. The next prime is 2021120220157. The reversal of 2021120220122 is 2210220211202.

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 only one way, i.e., 1853979068881 + 167141151241 = 1361609^2 + 408829^2 .

It is a super-3 number, since 3×2021120220122³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2021120220122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505280055029 + ... + 505280055032.

Almost surely, 2^{2021120220122} is an apocalyptic number.

2021120220122 is a deficient number, since it is larger than the sum of its proper divisors (1010560110064).

2021120220122 is a wasteful number, since it uses less digits than its factorization.

2021120220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010560110063.

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

Adding to 2021120220122 its reverse (2210220211202), we get a palindrome (4231340431324).

The spelling of 2021120220122 in words is "two trillion, twenty-one billion, one hundred twenty million, two hundred twenty thousand, one hundred twenty-two".