2021012121122 has 8 divisors (see below), whose sum is σ = 3031656489900. Its totient is φ = 1010459957824.

The previous prime is 2021012121119. The next prime is 2021012121151. The reversal of 2021012121122 is 2211212101202.

It can be written as a sum of positive squares in 2 ways, for example, as 2015090972521 + 5921148601 = 1419539^2 + 76949^2 .

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 2021012121122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22996547 + ... + 23084262.

Almost surely, 2^{2021012121122} is an apocalyptic number.

2021012121122 is a deficient number, since it is larger than the sum of its proper divisors (1010644368778).

2021012121122 is a wasteful number, since it uses less digits than its factorization.

2021012121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46102740.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2021012121122 its reverse (2211212101202), we get a palindrome (4232224222324).

The spelling of 2021012121122 in words is "two trillion, twenty-one billion, twelve million, one hundred twenty-one thousand, one hundred twenty-two".